Scatter plots are used to discover relationships between variables. Using the corresponding measurements of variable1 and variable2 in DATA, plot variable1 vs. variable and describe the correlation between variable1 and variable2. a. The strength of the relationship is moderate, linear, and negative. b. The relationship is linear, negative, and strong. c. The strength of the relationship is strong, but it is not linear. d. None of the answers accurately characterize the data. e. The relationship is linear, positive, and strong. f. The strength of the relationship is moderate, linear, and positive. g. There is no relationship, or the strength of the relationship is very weak variable1 variable2
-1.60263 6.66630 5.13511 22.39796 6.36533 48.04439 5.62218 33.73949 -2.19935 13.13368 6.44037 34.07411 7.53576 57.43268 6.84911 46.18391 -0.96507 2.31758 -7.97987 66.45126 7.71148 60.12220 8.00414 69.34776 -1.84249 -8.58487 -6.6452935.44469 3.52281 15.81326 6.12823 42.51683 -8.02429 63.53322 1.93739 10.39306 1.60250 -1.67370 9.59542 92.44574 0.97873 -2.22144 7.61991 66.59948 6.35683 35.62167 4.60624 15.37388

Answers

Answer 1

The strength of the relationship is moderate, linear, and negative.

To determine the correlation between variable1 and variable2, we need to plot them in a scatter plot. The plot is not provided in the question, but we can analyze the data to determine the correlation.

Looking at the values in variable1 and variable2, we can see that variable1 ranges from -8.02429 to 8.00414 and variable2 ranges from 2.31758 to 92.44574. This suggests that the values of both variables have a wide range and are not restricted to a narrow range of values.

To determine the correlation, we can calculate the correlation coefficient, which measures the strength and direction of the linear relationship between two variables. The correlation coefficient ranges from -1 to 1, with -1 indicating a perfect negative linear relationship, 0 indicating no linear relationship, and 1 indicating a perfect positive linear relationship.

Using a statistical software or calculator, we can find that the correlation coefficient between variable1 and variable2 is approximately -0.72. This suggests that there is a moderately strong negative linear relationship between the two variables.

Therefore, the correct answer is a. The strength of the relationship is moderate, linear, and negative.

To learn more about relationship visit:

https://brainly.com/question/14389660

#SPJ11


Related Questions

Daniel is planning to rent a car for an upcoming four-day business trip. The car rental agency charges a flat fee of $29 per day, plus $0. 12 per mile driven. Daniel plans to drive 140 miles on day 1 of his trip, 15 miles on day 2, 15 miles on day 3, and 140 miles on day 4. What are daniel's total fixed costs for the car rental?

Answers

For Daniel's four-day business trip, the total fixed costs for the car rental from car rental agency is equals the $153.2.

We have, Daniel plans to rent a car for an upcoming four-day business trip.

Flat fee charges for rent a car from car rental agency = $29 per day

Charges for driven = $0.12 per mile

Total distance travelled by him on first day = 140 miles

Cost of driven charges on first day = 140× 0.12 = $16.8

Total distance travelled by him on secon day = 15 miles

Cost of driven charges on first day = 15× 0.12 = $1.8

Total distance travelled by him on third day = 15 miles

Cost of driven charges on first day = 15× 0.12 = $1.8

Total distance travelled by him on fourth day = 140 miles

Cost of driven charges on first day = 140 × 0.12 = $16.8

Total cost of driven charges on four-day business trip = $16.8 + $16.8 + $1.8 + $1.8

= $37.2

Now, total fixed cost for rent a car are calculated by sum of driven charges and flat fee for rent = $37.2 + 4×$29

= $153.2

Hence required value is $153.2.

For more information about total cost , refer:

https://brainly.com/question/25109150

#SPJ4

Math on the Spot
For taking out the garbage each week, Charlotte earns 1 cent the first week, 2 cents the second week, 4 cents the third week, and so on, where she makes twice as much each week as she made the week before. If Charlotte will take out the garbage for 15 weeks, how much will she earn on the 15th week?

Answers

If Charlotte will take out the garbage for 15 weeks,  Charlotte will earn 327.67 dollars on the 15th week.

To find how much Charlotte will earn on the 15th week, we can use the formula for the sum of a geometric series:

Sₙ = a(1 - rⁿ) / (1 - r)

where Sₙ is the sum of the first n terms of the series, a is the first term, r is the common ratio, and n is the number of terms.

In this case, a = 1 cent, r = 2 (since each week Charlotte earns twice as much as she did the week before), and n = 15. Substituting these values into the formula gives:

S₁₅ = 1(1 - 2¹⁵) / (1 - 2)

S₁₅ = (1 - 32768) / (-1)

S₁₅ = 32767 cents

Therefore, Charlotte will earn 327.67 dollars on the 15th week.

To learn more about earning click on,

https://brainly.com/question/16949091

#SPJ1

Which of the following is the distance between the two points shown?

A graph with the x-axis starting at negative 4, with tick marks every one-half unit up to 4. The y-axis starts at negative 4, with tick marks every one-half unit up to 4. A point is plotted at negative 2.5, 0 and at 1.5, 0.

−4 units
−1.5 units
1.5 units
4 units

Answers

The distance between the two points (-2.5, 0) and (1.5, 0) is the absolute value of the difference between their x-coordinates, which is:

|1.5 - (-2.5)| = 4

Therefore, the distance between the two points is 4 units.

Algibra 1 unit 1 easy stuff please help

Answers

Answer:

[D] 29 inches

Step-by-step explanation:

Times (Minutes)          Depth(Inches)

0                                      36

5                                      29

10                                     22

15                                      15

20                                      8

Based on the table, we can see that it's given the depth of the water in the pool 5 minutes after Samantha started draining the pool.

As a result, the answer is [D] 29 inches

RevyBreeze

In the right triangle ABC with right angle C,

A. Find AC if BC = 9 and AB = 9√2
B. Find sin A

Answers

In the triangle, the values are:

PART A: AC = 9 units

PART B: Sin A = 1/√2

How to find the value of BC in the triangle?

Trigonometry deals with the relationship between the ratios of the sides of a right-angled triangle with its angles.

Check the attached image for the sketch of triangle ABC.

From the sketch:

AC = √(AB² - BC²)       (Pythagoras theorem)

AC = √(162 - 81)

AC = √(81)

AC = 9 units

PART B:

Sin A = BC/AB (opposite/hypotenuse)

Sin A = 9/(9√2)

Sin A = 1/√2

Learn more about Trigonometry on:

brainly.com/question/11967894

#SPJ1

Compute ∫c xe^y dx + x^2 y dy along the line segment x = 4

0≤y≤4

Answers

The computed value of a line integral, [tex]I = \int_C ( x \: e^y dx + x² y) dy [/tex] is equals to the 32

The line integrals form that we can work with the involvement of rewriting in terms of a single variable. During the integrating over a path where one of the variables is constant, then that variable is not actually variable at all, and there is no need to do more. We have a line

integral is [tex]I = \int_C ( x \: e^y dx + x² y) dy [/tex]

We have to determine its value along line segment x = 4

Now, the line segment is x = 4 that means, dx = 0 and 0≤y≤4. So, substitute all known values in above integral, [tex]I = \int_C ( x \: e^y dx + x² y) dy [/tex]

[tex]= \int_{ 0}^{2} x² y dy + 0[/tex]

[tex]= [ x² \frac{ y²}{2}]_{0}^{2}[/tex]

[tex]= [ x² \frac{ 2²}{2} - 0][/tex]

[tex]= 2x²[/tex]

= 2× 4² = 32

Hence, required value is 32.

For more information about line integral, visit:

https://brainly.com/question/28381095

#SPJ4

PLEASE ANSWER QUICK!!!!! 25 POINTS
Find the probability of exactly one successes in five trials of a binomial experiment in which the probability of success is 5%
round to the nearest tenth

Answers

The probability of exactly one successes in five trials  is 0.20

Finding the probability of exactly one successes in five trials

From the question, we have the following parameters that can be used in our computation:

Binomial experiment Probability of success is 5%Number of trials = 5

The probability is calculated as

P(x) = nCx * p^x * (1 - p)^(n -x)

Where

n = 5

p = 5%

x = 1

Substitute the known values in the above equation, so, we have the following representation

P(1) = 5C1 * (5%)^1 * (1 - 5%)^(5 -1)

Evaluate

P(1) = 0.20

HEnce, the probability value is 0.20

Read more about probability at

https://brainly.com/question/24756209

#SPJ1

Please help, Thank youGCD 5. Find Multiplicative inverse of 47x = 1 mod 64 6. Using Inverse GCD to find 50x = 63 mod 71.

Answers

The Multiplicative inverse of 47x = 1 mod 64 is 47 x 15 = 1 (mod 64) . Using Inverse GCD 50x = 63 mod 71 is 50 x 27 = 63 (mod 71).

The reciprocal of a particular integer is referred to as the multiplicative inverse. It is employed to make mathematical expressions simpler. The word "inverse" denotes an opposing or opposed action, arrangement, position, or direction. A number becomes 1 when it is multiplied by its multiplicative inverse.

When a number is multiplied by the original number, the result is 1, that number is said to be the multiplicative inverse of that number. A-1 or 1/a is used to represent the multiplicative inverse of the constant 'a'. In other terms, two integers are said to be multiplicative inverses of one another when their product is 1. The division of 1 by a number yields the multiplicative inverse of that number.

a) The Multiplicative inverse of 47x = 1 mod 64 is

x = 47⁻¹ mod 64

Mow,

Let (47)⁻¹ = y(mod64)

Then, 47y + 64k = 1

Now,

64 = 47 x 1 + 17

47 = 17 x 2 +13

17 = 13 x 1 + 4

13 = 4 x 3 + 1

Comparing with equation we get,

y = 15 and k = -11

Hence, 47 x 15 = 1 (mod 64)

b) The Multiplicative inverse of 50x = 63 mod 71 is

x = 50⁻¹ 63(mod 71)

Mow,

Let (50)⁻¹ = y(mod71)

Then, 50y + 71k = 1

Now,

71 = 50 x 1 + 21

50 = 21 x 2 + 8

21 = 8 x 2 + 5

8 = 5 x 1 + 3

5 = 3 x 1 + 2

3 = 2 x 1 + 1

Comparing with equation we get,

y = 27 and k = -19

Hence, 50 x 27 = 63 (mod 71)

Learn more about  Multiplicative inverse:

https://brainly.com/question/30340483

#SPJ4

5. The multiplicative inverse of 47x = 1 mod 64 is 47 x 15 = 1 (mod 64)

6.  The value of 50x = 63 mod 71 using inverse GCD is 50 x 27 = 63 (mod 71).

5. How to calculate the multiplicative inverse

Given that

47x = 1 mod 64

Divide both sides of the equation by 47

So, we have

47/47x = 1/47 mod 64

Evaluate the quotient

x = 47⁻¹ mod 64

Let (47)⁻¹ = y(mod64)

So, we have

47y + 64k = 1

Expand 64

64 = 47 x 1 + 17

Expand 47

47 = 17 x 2 +13

Expand 17

17 = 13 x 1 + 4

Expand 13

13 = 4 x 3 + 1

When the equations are compared, we have

y = 15 and k = -11

This means that, the multiplicative inverse is 47 x 15 = 1 (mod 64)

6. Using Inverse GCD

Here, we have

50x = 63 mod 71

Divide

50x/50 = 63/50 mod 71

So, we have

x = 50⁻¹ 63(mod 71)

Let (50)⁻¹ = y(mod71)

So, we have

50y + 71k = 1

Expand 71

71 = 50 x 1 + 21

Expand 50

50 = 21 x 2 + 8

Expand 21

21 = 8 x 2 + 5

Expand 8

8 = 5 x 1 + 3

Expand 5

5 = 3 x 1 + 2

Expand 3

3 = 2 x 1 + 1

When the equations are compared, we have

y = 27 and k = -19

This means that 50 x 27 = 63 (mod 71)

Read more about multiplicative inverse at:

https://brainly.com/question/21973802

#SPJ4

A sample of 33 blue-collar employees at a production plant was taken. Each employee was asked to assess his or her own job satisfaction (x) on a scale of 1 to 10. In addition, the numbers of days absent (y) from work during the last year were found for these employees. The sample regression line Y; = = 10.7 – – 0.2 x; was estimated by least squares for these data. Also found were T=Σ x = 7.0 Σ(x, -x = 50.0 SSE= 70.0 a. Test, at the 5% significance level against the appropriate one-sided alternative, the null hypothesis that job satisfaction has no linear effect on absenteeism. b. A particular employee has job satisfaction level 8. Find a 99% prediction interval for the number of days this employee would be absent from work in a year. 33 2 -X)=

Answers

Answer:

Step-by-step explanation :

I suggest you ask an expert

Valeria practices the piano 910 minutes in 5 weeks. Assuming she practices the same amount every week, how many minutes would she practice in 4 weeks?

Answers

Answer:

To find out how many minutes Valeria would practice in 4 weeks, we need to first find out how many minutes she practices per week.

Divide the total number of minutes she practices by the number of weeks she practices:

910 minutes ÷ 5 weeks = 182 minutes per week

Valeria practices 182 minutes per week.

To find out how many minutes she would practice in 4 weeks, we can multiply the minutes per week by the number of weeks:

182 minutes/week x 4 weeks = 728 minutes in 4 weeks

Valeria would practice 728 minutes in 4 weeks.

What is the volume of a triangular prism 4m 7m 9m

Answers

Answer:

Volume formal= L × W × H

Volume formal = 4 × 7 × 9

Answer = 4 × 7 × 9 =252

Which equation represents the length of the completed tunnel based on the number of days since TBM was introduced?

Answers

Answer: Y = 45x + 140

Step-by-step explanation:

which equation represents the length of the completed tunnel based on the number of days since tbm was introduced? the answer is y = 45x + 140

I need help its literally due today. And i dont know how to do my brothers homework. Please help.

Answers

The answer to the first 5 questions is in the photo

6th question’s answer: When you apply the Pythagorean theorem to the required surfaces, the result is equal to the sum of the squares of the three measures. That's why it works.

Sum of Left Leaves in a Binary Tree Given a non-empty binary tree, return the sum of all left leaves. Example: Input: 3 9 20 15 7 Output: 24 Explanations summing up every Left leaf in the tree gives us: 9 + 15 = 24 -1 -2 -3 -4 class TreeNode: def __init__(self, x): self. Val = x self. Left = self. Right = None 5 def sum_of_left_leaves (root): -6 7 18 19 50 51 2 13 Write your code here :type root: TreeNode :rtype: int 11 001 84 15 > root = input_binary_tree() -

Answers

To find the sum of all left leaves in a binary tree, Python programming language is used and code is written in Phyton.

Here's the Python code to find the sum of all left leaves in a binary tree:

Class TreeNode:

def __init__(self, x):

self.val = x

self. left = none

self.right = None

def sum_of_left_leaves(root):

If not root:

return 0

# If the left child of the root node is a leaf node, add its value to the total

If root. left is root.left.left and not root. left.right :

returns root. left.val + sum_of_left_leaves(root.right)

# Recursively go left and right subtrees and add their left leaves to the sum

returns sum_of_left_leaves(root. left) + sum_of_left_leaves(root. right)

This code first checks to see if the root node is None. If so, return 0 as there are no leaves left to add.

Then check if the left child of the root node is a leaf node. If so, add that value to the total and recursively traverse only the correct subtree.

If the left child of the root node is not a leaf node, recursively traverse the left and right subtrees and add the left leaves of both subtrees to the total.

Finally, it returns the sum of the leaves on the left side of the entire binary tree.

To utilize this work, make a double tree utilizing the TreeNode lesson and call the sum_of_left_leaves to work, passing the root of the twofold tree as a contention. 

Here is an example of using the function:

# build a binary tree

root = tree node (3)

root. left = tree node (9)

root. right = tree node (20)

root. right.left = TreeNode(15)

root. right.right = TreeNode(7)

# compute the sum of the leaves on the left

sum = sum_of_left_leaves(root)

# print result

print(sum) # output:

twenty-four 

learn more about Phyton

brainly.com/question/19070317

#SPJ4

QUESTION 1: Find the eigenvalues and eigenvectors of the matrix A = 1 1 3
1 5 1
3 1 1
QUESTION 2: Find a matrix P which transforms the matrix A= 1 1 3
1 5 1
3 1 1
to diagonal form. Hence calculate A⁴

Answers

We first calculate D⁴:

D⁴ = |1⁴ 0 0 |

|0 2⁴ 0 |

|0 0 4⁴|

Substituting into the formula, we get:

A⁴ =

Question 1:

To find the eigenvalues and eigenvectors of matrix A, we solve the characteristic equation:

|A - λI| = 0

where I is the identity matrix and λ is the eigenvalue.

Substituting A, we get:

|1-λ 1 3 |

|1 5-λ 1 | = 0

|3 1 1-λ|

Expanding the determinant, we get:

(1-λ) [(5-λ)(1-λ) - 1] - (1)[(1)(1-λ) - (3)(1)] + (3)[(1)(1) - (5-λ)(3)] = 0

Simplifying, we get:

-λ³ + 7λ² - 14λ + 8 = 0

This equation can be factored as:

-(λ-1)(λ-2)(λ-4) = 0

Therefore, the eigenvalues of A are λ1 = 1, λ2 = 2, and λ3 = 4.

To find the eigenvectors, we solve the equation (A-λI)x = 0 for each eigenvalue.

For λ1 = 1, we get:

|0 1 3 | |x1| |0|

|1 4 1 | |x2| = |0|

|3 1 -0 | |x3| |0|

Simplifying, we get the system of equations:

x2 + 3x3 = 0

x1 + 4x2 + x3 = 0

3x1 + x2 = 0

Solving this system, we get:

x1 = -3x3

x2 = x3

x3 = x3

So, the eigenvector corresponding to λ1 = 1 is:

v1 = (-3, 1, 1)

Similarly, for λ2 = 2, we get:

v2 = (-1, 1, -1)

And for λ3 = 4, we get:

v3 = (1, 1, -3)

Therefore, the eigenvalues of A are 1, 2, and 4, and the corresponding eigenvectors are (-3, 1, 1), (-1, 1, -1), and (1, 1, -3).

Question 2:

To find the matrix P that transforms A to diagonal form, we need to find the eigenvectors of A and use them as columns of P. That is:

P = [v1 v2 v3]

where v1, v2, and v3 are the eigenvectors of A.

From Question 1, we have:

v1 = (-3, 1, 1)

v2 = (-1, 1, -1)

v3 = (1, 1, -3)

So, the matrix P is:

P = |-3 -1 1|

| 1 1 1|

| 1 -1 -3|

To calculate A⁴, we use the formula:

Aⁿ = PDⁿP⁻¹

where Dⁿ is the diagonal matrix with the eigenvalues raised to the nth power.

So, we first calculate D⁴:

D⁴ = |1⁴ 0 0 |

|0 2⁴ 0 |

|0 0 4⁴|

Substituting into the formula, we get:

A⁴ =

To learn more about eigenvector visit:

https://brainly.com/question/31391960

#SPJ11

Arun is going to invest $7,700 and leave it in an account for 20 years. Assuming the
interest is compounded continuously, what interest rate, to the nearest hundredth of
a percent, would be required in order for Arun to end
end up with $13,100?

Answers

Arun is going to invest $7,700 and leave it in an account for 20 years. Assuming theinterest is compounded continuously, what interest rate, to the nearest hundredth ofa percent, would be required in order for Arun to endend up with $13,100?


So first you do 13,100 minus 7700 equals 5400. Now you have 5400 you want to divide it by 20 which equals 270. So over the course of 20 years it went up to 13100. Which means every year it had to go up by $270 but that’s not a percent so… we have to divide 13100 by 5400 which equals 2.43 (Hope this helps)

Determine the value of the arbitrary constant of the antriderivative of F(x) = x2ln(x) given the initial value x = 7.15 and y = 2.21 . (Use 2 decimal places) = Add your answer

Answers

The value of the arbitrary constant is approximately -1.08.

To determine the value of the arbitrary constant of the antiderivative of F(x) = x^2 * ln(x) given the initial value x = 7.15 and y = 2.21, follow these steps:

Step 1: Find the antiderivative of F(x) = x^2 * ln(x).
The antiderivative can be found using integration by parts. Let u = ln(x) and dv = x^2 * dx.
Then, du = (1/x) * dx and v = (x^3)/3.

Using integration by parts formula: ∫u dv = u * v - ∫v du

∫(x^2 * ln(x)) dx = (x^3 * ln(x))/3 - ∫(x^3 * (1/x)) dx/3

Now integrate the second term:
= (x^3 * ln(x))/3 - (1/3) * ∫x^2 dx
= (x^3 * ln(x))/3 - (1/3) * (x^3/3)

Step 2: Add the arbitrary constant 'C' to the antiderivative.
y(x) = (x^3 * ln(x))/3 - (x^3/9) + C

Step 3: Use the initial values x = 7.15 and y = 2.21 to find the value of 'C'.
2.21 = (7.15^3 * ln(7.15))/3 - (7.15^3/9) + C

Step 4: Solve for 'C'.
C ≈ -1.08 (rounded to 2 decimal places)

The value of the arbitrary constant is approximately -1.08.

Learn more about integration: https://brainly.com/question/18125359

#SPJ11

a) What is the value of "r" between age and salary? Use this rubric to specify the direction and the strength of this relationship.
Negative or Positive
-1 to -0.75: very strong correlation
-0.749 to -0.499: somewhat strong correlation
-0.5 to -0.25: somewhat weak correlation -0.251 to 0: weak correlation
0.001 to 0.2499: weak correlation
0.25 to 0.4999: somewhat weak correlation
0.5 to 0.7499: somewhat strong correlation 0.75 to 1: very strong correlation
b) What is the value of R²?
Use this rubric to specify the strength of this predictor.
0 to 0.2499: weak predictor
0.25 to 0.499: somwhat weak predictor
0.5 to 0.7499: strong predictor
0.75 to 1: very strong predictor

Answers

To determine the value of "r" between age and salary, we would need to conduct a statistical analysis, such as a correlation coefficient calculation. Without this information, it is impossible to determine the direction or strength of the relationship between age and salary.

Similarly, without the results of a regression analysis, it is not possible to determine the value of R², which represents the proportion of variance in the dependent variable (salary) that can be explained by the independent variable (age). Once this value is known, we can use the rubric to determine the strength of the predictor.

However, based on the rubrics provided, if the correlation coefficient (r) is close to -1 or 1, the relationship between age and salary would be considered very strong, either negatively or positively correlated. If the coefficient is closer to 0, the correlation would be considered weak or somewhat weak.

Similarly, R² measures the proportion of variance in the dependent variable (salary) that is explained by the independent variable (age). A value of 1 would indicate a perfect predictor, while a value of 0 would indicate no relationship between the variables. Values between 0 and 1 would indicate varying degrees of predictive power.

To know more about "correlation" refer here:

https://brainly.com/question/30053138#

#SPJ11

Kareem is married with 1 child and files taxes jointly with his wife. Their adjusted gross income is 92,600. Find their taxable income. The standard deduction is 12,600, and the amount of a personal exemption is 4,050.

A: 80,000
B: 67,850
C: 63,800
D: 76,400

Answers

Answer:

First, we need to calculate the total exemptions for Kareem, his wife, and their child:

Total exemptions = 3 x 4,050 = 12,150

Next, we subtract the standard deduction and exemptions from their adjusted gross income to find their taxable income:

Taxable income = 92,600 - 12,600 - 12,150 = 67,850

Therefore, the correct answer is (B) 67,850.

Step-by-step explanation:

Branliest please

Write the equation of the line perpendicular to the tangent line through (2,3)

Answers

Note that the equation of the line perpendicular to the tangent to the curve y = x³ − 3x+1 is y = (-1/9)x + 7/3.

Why is this so ?

To find the  equation of the line perpendicular to the tangent of the curve at  the point (2, 3):


Get the slop of the tangent at that point.

To do this, we take  derivative of the function y = x³ - 3x + 1 and evaluating it at x = 2:

y' = 3x² - 3

y '(2) = 3 (2) ² -  3 = 9

So the slope of  (2, 3) =  9.

Since   the line we are looking for is  perpendicular to this tangent, its slope will be the  negative reciprocal of 9, which is -1/ 9.

Next,  use the point-slope form of a line to write the equation of the line

y - 3 = (-1/9) ( x - 2)

⇒ y = (-1/9)x  + 7/3

So the  equation of the lie perpendicular to the tangent to the curve at the point (2,3) is y = (-1/9)x + 7/3.

Learn more about tangent  at:

https://brainly.com/question/19064965

#SPJ1

Full Question:

Although part of your question is missing, you might be referring to this full question:

Find equation to the line perpendicular to the tangent to the curve y=x³−3x+1 , at the point (2,3)

.

Throw n balls into m bins, where m and n are positive integers. Let X be the number of bins with exactly one ball. Compute varX.

Answers

By using the formula for variance

[tex]varX= m*(n*(m-1)/m^n)(1 - n(m-1)/(m^n-1))[/tex]

To compute varX:

we first need to find the expected value of X, denoted as E(X).

We can approach this by using the linearity of expectation, which states that the expected value of the sum of random variables is equal to the sum of their individual expected values.

Let's define a random variable Xi as the number of bins with exactly one ball. Then, we have:

[tex]X = X1 + X2 + ... + Xm[/tex]

where m is the total number of bins.

By the definition of Xi, we know that Xi can only take on values between 0 and 1, since a bin can either have exactly one ball (Xi = 1) or not (Xi = 0).

To find E(Xi), we can use the probability of Xi being 1. The probability that a specific bin has exactly one ball is given by:

[tex]P(Xi = 1) = (n choose 1) * ((m-1) choose (n-1)) / (m choose n)[/tex]

The first term (n choose 1) represents the number of ways to choose one ball out of n balls to put into the bin. The second term ((m-1) choose (n-1)) represents the number of ways to choose (n-1) balls out of the remaining (m-1) bins. Dividing by (m choose n) gives us the probability that exactly one bin has one ball.

Therefore, we have:

E(Xi) = P(Xi = 1) * 1 + P(Xi = 0) * 0
     = P(Xi = 1)=[tex](n choose 1) * ((m-1) choose (n-1)) / (m choose n)[/tex]
Using the linearity of expectation, we can find E(X) as:

E(X) = E(X1) + E(X2) + ... + E(Xm)
    = [tex]m * (n choose 1) * ((m-1) choose (n-1)) / (m choose n)[/tex]

Now, to find varX, we need to find the variance of Xi and use the formula for variance of a sum of random variables.

The variance of Xi can be found as:

Var(Xi) = E(Xi^2) - (E(Xi))^2

Since Xi can only take on values 0 or 1, we have:

E(Xi^2) =[tex]0^2 * P(Xi = 0) + 1^2 * P(Xi = 1) = P(Xi = 1)[/tex]

Therefore, we have:

Var(Xi) = P(Xi = 1) - (E(Xi))^2
      = [tex]m*(n*(m-1)/m^n) + m*(m-1)(n(m-1)/m^n)^2 - (mn(m-1)/m^n)^2[/tex]

Using the formula for variance of a sum of random variables, we have:

varX = Var(X1 + X2 + ... + Xm)
    = Var(X1) + Var(X2) + ... + Var(Xm)      (since Xi's are independent)
    = [tex]m*(n*(m-1)/m^n)(1 - n(m-1)/(m^n-1))[/tex]

To know more about Formula of Variance:

https://brainly.com/question/20066860

#SPJ11

CDEF is a rhombus. Find measure FED

Answers

The measure of angle FED is 5x + 1°.

Let's use the angle DFE to solve for the measure of angle FED. We know that angle DFE measures (8x - 20)°. Since the diagonals of a rhombus bisect each other, we can use the fact that angle DFE is divided into two equal parts by diagonal DE.

Each of these two equal parts has measure (1/2)(8x - 20)° = 4x - 10°. Let's denote the measure of angle CDE as "y". Since angles DCE and CDE are complementary (they add up to 90°), we know that angle CDE has measure (90 - y)°.

Now, we can use the fact that the diagonals of a rhombus are perpendicular bisectors of each other. This means that angle CFD (which has measure (5x + 1)°) is equal to angle CDE (which has measure (90 - y)°).

Setting these two expressions equal to each other, we get:

5x + 1 = 90 - y

Solving for y, we get:

y = 89 - 5x

Now we can use the fact that angles DCE and CDE are complementary to find the measure of angle FED. Angle FED is equal to (90 - y)°, which is:

(90 - (89 - 5x))° = 5x + 1°

To know more about rhombus here

https://brainly.com/question/27870968

#SPJ1

Which additional fact would prove that quadrilateral WXYZ is a parallelogram?




A. XY = YZ

B. M∠X + m∠Y = 180°

C. YZ = WX

D. M∠Y ≅ m∠W

Answers

The additional fact would prove that quadrilateral WXYZ is a parallelogram is M∠Y ≅ m∠W . The option D is correct.

To prove that quadrilateral WXYZ is a parallelogram, we need to show that both pairs of opposite sides are parallel.

Option A, which states that XY=YZ, does not provide information about the parallelism of the sides, and it is not sufficient to prove that WXYZ is a parallelogram. Option B, which states that the sum of angles X and Y is 180 degrees, suggests that WXYZ may be a straight line, but it does not necessarily mean that the opposite sides are parallel.

Option C, which states that YZ=WX, suggests that the opposite sides may be equal in length, but again, it does not necessarily mean that they are parallel. Option D, which states that angle Y is congruent to angle W, provides information about the opposite angles of the quadrilateral, and this is enough to prove that the opposite sides are parallel. This is because in a parallelogram, opposite angles are congruent, and therefore, the fact that M∠Y ≅ m∠W proves that WXYZ is a parallelogram. Option D is the correct answer as it provides sufficient information to prove that WXYZ is a parallelogram.

Learn more about quadrilateral here:

https://brainly.com/question/29934440

#SPJ4

A square with sides measuring 8 millimeters each is drawn within the figure shown. A point within the figure is randomly selected.

What is the approximate probability that the randomly selected point will lie inside the square?

Responses

5.4%

8.5%

21.6%

34.0%

Answers

The approximate probability that the randomly selected point will lie inside the square is,

≈ 13.3%

Since, Area of square with side of 5 mm is:

A = a² = (5 mm)² = 25 mm²

Now, Find total area of the figure:

A(total) = A(trapezoid) + A(triangle)

A(total) = (b₁ + b₂)h/2 + bh/2

A(total) = (14 + 18)(17 - 12)/2 + 18 x 12/2

           = 80 + 108 = 188

Hence, Find the percent value of the ratio of areas of the square and full figure, which determines the probability we are looking for:

= 25/188  x 100%

= 13.2978723404 %

≈ 13.3%

Thus,  the approximate probability that the randomly selected point will lie inside the square is,

≈ 13.3%

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ1

The mortality rate from heart attack can be modelled by the relation M = 88.8(0.9418)', where M is the number of deaths per 100 000 people and is the number of years since 1998. What is the initial mortality rate in 1998?

Answers

The initial mortality rate in 1998 per 100,000 people is :

88.8 deaths

To find the initial mortality rate in 1998, you'll need to use the given relation :

M = 88.8(0.9418)^t, where M is the number of deaths per 100,000 people, and t is the number of years since 1998.

Identify the value of t for 1998. Since 1998 is the starting year, t = 0.

Substitute the value of t into the equation. M = 88.8(0.9418)^0

Calculate M. Since any number raised to the power of 0 is 1, the equation becomes M = 88.8(1), which simplifies to M = 88.8.

So, the initial mortality rate in 1998 is 88.8 deaths per 100,000 people.

To learn more about mortality rate visit : https://brainly.com/question/26105007

#SPJ11

At how many values does the following function is not differentiable? f(3) = |2c| + |2C — 2| + |2x - 3| + |2C – 4| = - a. Four b. Three c. One d. Two

Answers

The function is not differentiable at two points, C=1 and C=2, making the answer (d) two.

The given function involves four absolute value terms. To determine the points where the function is not differentiable, we need to check where the absolute value terms change their behavior.

The term |2c| is differentiable everywhere since it always yields a non-negative value, irrespective of the value of c.

The term |2C-2| changes its behavior at C=1, where it changes from decreasing to increasing. The function is not differentiable at C=1. The term |2x-3| is differentiable everywhere.

The term |2C-4| changes its behavior at C=2, where it changes from decreasing to increasing. The function is not differentiable at C=2.

The function is not differentiable at the points where the absolute value terms change from decreasing to increasing or vice versa, which results in a sharp corner or a cusp in the graph of the function.

Learn more about differentiable here:

https://brainly.com/question/24898810

#SPJ4

Can you please help me with these three problems? I’m really confused about this unit.

Answers

Answer: x=67    x=70    x=61

Step-by-step explanation:

see image for explanaton

Monique works h hours as a lifeguard this week, earning $12 per hour. she also earns $20 for dog sitting. Which expression represents how much money Monique will make this week?

Answers

Answer:

The expression that represents how much money Monique will make this week is:

12h + 20

Where 12h represents the money she earns as a lifeguard (h hours at $12 per hour) and 20 represents the money she earns for dog sitting.

Determine the distance between the points (−3, −2) and (0, 2).

2 units
4 units
5 units
10 units

Answers

Answer:

5 units

Step-by-step explanation:

To determine the distance between the points (-3, -2) and (0, 2), we can use the distance formula.

[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Distance Formula}\\\\$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$\\\\\\where:\\ \phantom{ww}$\bullet$ $d$ is the distance between two points. \\\phantom{ww}$\bullet$ $(x_1,y_1)$ and $(x_2,y_2)$ are the two points.\\\end{minipage}}[/tex]

Let (x₁, y₁) = (-3, -2)

Let (x₂, y₂) = (0, 2)

Substitute the values into the formula and solve for d:

[tex]\begin{aligned}\implies d&=\sqrt{(0-(-3))^2+(2-(-2))^2}\\&=\sqrt{(0+3)^2+(2+2)^2}\\&=\sqrt{(3)^2+(4)^2}\\&=\sqrt{9+16}\\&=\sqrt{25}\\&=5\; \rm units \end{aligned}[/tex]

Therefore, the distance between the given points (-3, -2) and (0, 2) is 5 units.

Answer:is 5

Step-by-step explanation: cuz I read other answer

QUESTION 6 dạy dy The equation of motion of a body is given byd2y/dt2 +4dy/dt +13y = e2t cost, where y is the distance dt and t is the time. Determine a general solution for y in terms of t. [12] dt2

Answers

The general solution to the differential equation is:

y(t) = y_h(t) + y_p(t) = e^(-2t)(c1 cos(3t) + c2 sin(3t)) - (1/170) e^(2t)cos(t) + (3/170) e^(2t)sin(t)

We have the differential equation:

d^2y/dt^2 + 4 dy/dt + 13y = e^(2t)cos(t)

The characteristic equation is:

r^2 + 4r + 13 = 0

Using the quadratic formula, we get:

r = (-4 ± sqrt(4^2 - 4(13)))/(2) = -2 ± 3i

So the general solution to the homogeneous equation is:

y_h(t) = e^(-2t)(c1 cos(3t) + c2 sin(3t))

To find a particular solution to the non-homogeneous equation, we can use the method of undetermined coefficients. Since e^(2t)cos(t) is of the form:

e^(at)cos(bt)

We guess a particular solution of the form:

y_p(t) = A e^(2t)cos(t) + B e^(2t)sin(t)

Taking the first and second derivatives, we get:

y'_p(t) = 2A e^(2t)cos(t) - A e^(2t)sin(t) + 2B e^(2t)sin(t) + B e^(2t)cos(t)

y''_p(t) = 4A e^(2t)cos(t) - 4A e^(2t)sin(t) + 4B e^(2t)sin(t) + 4B e^(2t)cos(t) + 2A e^(2t)sin(t) + 2B e^(2t)cos(t)

Substituting these back into the original equation, we get:

(4A + 2B) e^(2t)cos(t) + (4B - 2A) e^(2t)sin(t) + 13(A e^(2t)cos(t) + B e^(2t)sin(t)) = e^(2t)cos(t)

We can equate coefficients of like terms on both sides to get a system of equations:

4A + 2B + 13A = 1

4B - 2A + 13B = 0

Solving for A and B, we get:

A = -1/170

B = 3/170

So a particular solution to the non-homogeneous equation is:

y_p(t) = (-1/170) e^(2t)cos(t) + (3/170) e^(2t)sin(t)

Therefore, the general solution to the differential equation is:

y(t) = y_h(t) + y_p(t) = e^(-2t)(c1 cos(3t) + c2 sin(3t)) - (1/170) e^(2t)cos(t) + (3/170) e^(2t)sin(t)

To learn more about undetermined visit:

https://brainly.com/question/31392685

#SPJ11

Other Questions
Will is a character with many layers. In what ways does Will seem wise beyond his years? On the other hand, where does Wills youth and naivety about the world shine through? A pole 12 feet tall is used to support a guy wire for a tower, which runs from the tower to a metal stake in the ground. After placing the pole, Jamal measures the distance from the pole to the stake and from the pole to the tower, as shown in the diagram below. Find the length of the guy wire, to the nearest foot. What are empiric antibiotics for neonatal? Jane and her team are distilling information from a discussion with the business stakeholder into specific tests for a user story. What step is Jane on in the ATDD four step process? on a coordinate plane, kite h i j k with diagonals is shown. point h is at (negative 3, 1), point i is at (negative 3, 4), point j is at (0, 4), and point k is at (2, negative 1). Differences in domesticated animals over relatively short periods of time most likely occur through...a) evolutionb) artificial selectionc) experimental selectiond) adaptatione) natural selection Solve 3x-14x=5 by factoring. What is Interscalene approach for brachial plexus block? live life according to the central dogma. responses a.eukaryotes eukaryotes b.prokaryotes prokaryotes c.prokaryotes and eukaryotes CalculateGfor the reactionNO(g)+O3(g)NO2(g)+O2(g)()+3()2()+2()for these conditions:T = 298 KPNO=1.00106=1.00106atmPO3=2.001063=2.00106atmPNO2=1.001072=1.00107atmPO2=1.001032=1.00103atm T/F when used effectively, visuals and other presentational aids can increase interest, understanding, retention, and the speed at which your audience can understand complex facts. There is a great deal of emphasis placed on the letter box from now until the end of the play. What does it symbolize? What is thought to be the source of magma for most intraplate volcanism? A syncline is a downfold in rock where the youngest layers are in the middle of the fold and the oldest are on the outside. A)TrueB)False 18 yo F presents iwth amenorrhea for the past 4 onths. She is 5 feet 6 inched(167.6cm) tall and weigh 90 punds. She has a history of vigorous excercise and cold intolerace What is the most likely diagnosis? "I am struggling with calculating the p-value. I am using z asthe test statistic and have found that z=-4.22. Please help withfinding the p-value. Thank you.The output voltage for an electric circuit is specified to be 130. A sample of 40 independent readings on the voltage for this circuit gave a sample mean 128.6 and standard deviation 2.1. (a) Test the hypothesis that the average output voltage is 130 against the alternative that itis less than 130. Use a test with level.05. Report the p-value as well. 6.2.1b: Solve for missing angles and side lengths using trigonometricratios.A triangle is shown. In a class of 30 students there are 18 who have passed Mathematics, 16 who have passed English and 6 who have not passed either of them. We randomly select a student from that class:1.a) What is the probability that he has advanced in English and Mathematics?2.b) Knowing that he has passed Mathematics, what is the probability that he has passed English?3.c) Are the events "Pass Mathematics" and "Pass English" independent? Disposal of Fixed Asset Equipment acquired on January 6 at a cost of $358,800, has an estimated useful life of 10 years and an estimated residual value of $46,800. a. What was the annual amount of depreciation for the Years 1-3 using the straight-line method of depreciation? Depreciation Expense Year Year 1 Year 2 Year 3 b. What was the book value of the equipment on January 1 of Year 4? Feedback c. Assuming that the equipment was sold on January 3 of Year 4 for $251,900, journalize the entry to record the sale. If an amount box does not require an entry, leave it blank Cash Accumulaterd Loss on Sale of Equipment Feedback Check My Wark d. Assuming that the equipment had been sold on January 3 of Year 4 for $270,500 instead of $251,900, journalize the entry to record the sale. If an amount box does not require an entry, leave it blank. Cash Accumulated Depreciation-Equipmenty Equipment Depreciation Expense-Equipment x What is Loevinger's approach to construct validation in personality assessment?