1. A FoodPanda rider believes that his tips from various customers has a slightly right skewness with a mean of RM10 and a standard deviation of RM2.50. a. Calculate the mean and standard deviation of the sampling distribution of this tips for a sample of 25 customers. Describe the shape of its sampling distribution. [4 marks]​

Answers

Answer 1

Using the Central Limit Theorem, it is found that:

The sampling distribution is slightly right skewed, with mean of RM 10 and standard deviation of RM 0.5.

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, if the sample size is at least 30, the shape is approximately normal, otherwise it still is skewed.

In this problem, the mean is of 10 and the standard deviation is of 2.50, hence [tex]\mu = 10, \sigma = 2.5[/tex]

Sample of 25, hence [tex]n = 25, s = \frac{2.5}{\sqrt{25}} = 0.5[/tex]

Since the underlying distribution is skewed and the sample size is less than 30, the shape of the sampling distribution is slightly right skewed.

The sampling distribution is slightly right skewed, with mean of RM 10 and standard deviation of RM 0.5.

A similar problem is given at https://brainly.com/question/25817309


Related Questions

The equatorial radius of Earth is approximately 6 × 103 km, while the equatorial radius of Saturn is approximately 6 × 104 km. Which of the following is true?
A.
The equatorial radius of Saturn is approximately one hundred times that of Earth.

B.
The equatorial radius of Earth is approximately ten times that of Saturn.

C.
The equatorial radius of Saturn is approximately ten times that of Earth.

D.
The equatorial radius of Earth is approximately one hundred times that of Saturn.

Answers

Answer:

Step-by-step explanation:

C.

The equatorial radius of Saturn is approximately ten times that of Earth.

The ordinal is identical

The exponent of 10 is 4 - 3 = 1 greater for Saturn than for Earth

10¹ = 10 times

(b) A sum of money was to be shared among three friends Keisha, Tracey, and Kerry-Ann, in the
ratio 7:9:11 respectively. If Kerry-Ann received $3,300.00, find the sum of money that was
between the three friends.

Answers

The sum of the money that was  between the three friends is $8100.

Let x represent the amount of money given to the three friends to share.

Keisha, Tracey, and Kerry-Ann shared the money in the  ratio 7:9:11 respectively.

Since Kerry-Ann received $3300, hence:

(11/27) * x = 3300

11x/27 = 3300

x = $8100

The sum of the money that was  between the three friends is $8100.

Find out more at: https://brainly.com/question/2263981

A bag contains 4 red balls and 6 blue balls. If 3 balls are selected at random, find the probability of selecting 3 red balls?

Answers

The probability is 4⋅3⋅2⋅1/10•9•8•7=(4/4)(6/0)/(10/4)=1/210 so the probability of selecting 3 red balls would be 1/210

Select the correct answer from each drop-down menu. Identify the type of chart described and complete the sentence. A (blank) chart shows open and close prices and highs and lows, but over a long time period it can also show pricing (blank) .

Answers

Based on the information given, it can be deduced that the chart that is being described is the OHLC chart.

It should be noted that an open-high-low-close chart(OHLC) chart simply means a type of chart that's used to illustrate the movements in the price of a financial instrument for a particular period of time.

The vertical line on the chart illustrates the price range over a unit of time. It's useful in assessing volatility as it shows the full price range of the period.

Learn more about charts on:

https://brainly.com/question/14323743

Answer:

Candlestick & trends.

Step-by-step explanation: Got it correct on edmentum!

Ella is reading a map with a scale of 1 in. = 20 mi. On the map, the distance Ella must drive is 4.25 in.

How many miles will Ella drive?

Answers

Answer:

85 miles

Step-by-step explanation:

Solve by proportions:

1 in ⇒ 20 mi4.25 in ⇒ x

x = 4.25*20 / 1 = 85 mi

Scale is 1in =20mi

Distance in map=4.25in

Actual distance

4.25(20)85mi

what is the answer and steps to 18(2 − 1) ÷ 3 + 4

Answers

The answer is 10, by using pemdas you can just either add, subtract, multiply or divide.

10

Hi! When you see problems like this, always refer to PEMDAS!

P - Parenthesis

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

Also note that you go from left to right and parenthesis is always first!

18(2-1)÷3+4

Start with the parenthesis and subtract 2 from 1. That'll leave you with 1.

18(1)÷3+4

Next is multiplication since there are no exponents. Multiply 18 by 1. That'll leave you with 18.

18÷3+4

Now, divide 18 from 3. That'll leave you with 6.

6+4

Finally, you may add the final two. 6 plus 4 is 10.

With that being said, the correct answer is 10.

Find the sum of the first 20 terms of the sequence 2, 8, 14, 20, . . ..

Answers

Step-by-step explanation:

the rule is obviously to always add 6.

so,

2, 8, 14, 20, 26, 32, 38, 44, 50, 56, 62, 68, 74, 80, 86, 92, 98, 104, 110, 116

Answer:

1180

Step-by-step explanation:

1180 is correct answer

Can someone help me with this

Answers

Answer:

10 square inches

Step-by-step explanation:

[tex]area \: formula \: = \frac{1}{2} bh[/tex]

h= 5 inches

b= 4 inches

[tex] \frac{1}{2} \times 4 \times 5 = 10[/tex]

Hi, I already answered this question on your other post (seems like you posted this question twice): https://brainly.com/question/26075347 (check that link out)

please help me out y'all ​

Answers

first graph= negative association

second graph = no association

third graph = positive association

11
Y1
0
4
1
12
2
36
3
108
Write an explicit function

Answers

56566965577553666645556566667

6. Kendrick bought 4 bags of bagels. Every bag had a dozen bagels. How many bagels did Kendrick buy?​

Answers

Answer:

Kendrick bought 48 bagels.

Step-by-step explanation:

For this question, you would simply have to multiply 4 by 12.

Dozen means 12.

4x12=48

48 bagels.

(giving brainlelist if answered correctly!) which of the following inequalities is -4
?

Answers

-5 is always smaller than -4. So, x might be -4. So, A is an option you should select.2 is greater than -4. So, x might be -4. So, B is an option you should select.If we place -4 in x, we get 3(-4)+4, i.e., -12 + 4 = -8. So, 3x + 4 = -8. Therefore, you cannot select C because it cannot be greater than, it should be always equal to.5(-4) = -20, 2(-4) - 3 = -8 -3 = -11. -11 is greater than -20 but they are never equal. So, you cannot select D.4 - 2(-4) = 4 + 8 = 12. 12 is greater than -6. Therefore, you should select E.

Answer

A, B, E.

Hope you could get an idea from here.

Doubt clarification - use comment section.

someone actually help :((( need to finish exam before 12 !!
f(x)=17,000(0.87)x

The value of a certain SUV, in dollars, x years from its model year can be predicted by the exponential function shown in the table.

x| 0| 1| 2| 3| 4| 5|
g(x)| 21,000| 18,690| 16,634.10| 14,804.35| 13,175.87| 11,726.52|

How much more will the SUV be worth than the car 5 years after their model years? Round your answer to the nearest cent.

Answers

Using the exponential function, it is found that the SUV is worth $3,253.36 less than the car after 5 years.

The exponential function for the value of the SUV, after x years, is given by:

[tex]f(x) = 17000(0.87)^x[/tex]

Hence, after 5 years, the value is:

[tex]f(5) = 17000(0.87)^5 = 8473.16[/tex]

From the table, after 5 years, the car is worth $11,726.52.

11726.52 - 8473.16 = 3253.36.

The SUV is worth $3,253.36 less than the car after 5 years.

To learn more about exponential functions, you can take a look at https://brainly.com/question/25983065

please help ill mark brainliest​

Answers

= 60

( i dont know how to explain it , to many steps lol :3)

Ax+2y=10 through the point (4,3)

Answers

Answer:

can you give more context to the question and I will answer it in the comments? thanks!

Answer:

Slope-intercept form y=10x-37

Point slope form y-3=10(x-4)

Step-by-step explanation:

Your current salary is $30,900 per year. You’ve just accepted a new position at a company that’s to pay you $32,500 per year. How much more will you get per month at the new job? (Round your answer to the nearest dollar.)

Answers

Answer: $133

Explanation:

\cfrac{32\ 500 - 30\ 900}{12} = \$133

12

32 500−30 900

=$133

g(-2) mathematics what’s the answer I’m on a time limit this is due tomorrow omggggg

Answers

Answer:

-2g

Step-by-step explanation:

Distribute G to -2

In simple words multiply G and -2

How many different five-letter
arrangements can be made from the
letters in the word "PLUTO"?
5
25
60
120

Answers

Answer:

my guess would probably be 5 but it could also be 25. (id like to say the answer but i cant cause this should be something for you to decide the answer not me.

Step-by-step explanation:

I hope this helps you!

Erika drinks at least 40 ounces of water a day

Answers

Answer:  40 ounces or 0.3125 of a gallon

i didnt quite understand what you were asking but here is it broken down. :)

HELPP! PICTURE ATTACHED

find f(2)​

Answers

Answer:

f(2) =  Unidentified

Step-by-step explanation:

f(2) = ((2) +4)^2/(2)^2+2(2)-8

We can simplify the equation and get 36/4+4-8. After we simplify that we get 36/0. Since we have 0 as our denominator we know that our whole answer is unidentifiable.

What is the area of a triangle with the Base of √10 and a height of √13

Answers

Answer:

5.70

Step-by-step explanation:

[tex] a = \frac{1}{2} bh \\ \frac{ \sqrt{10} \sqrt{13} }{2} \\ \frac{ \sqrt{130} }{2} [/tex]

[tex]a = \frac{11.401}{2} \\ = 5.70[/tex]

Answer:

5.70

Step-by-step explanation:

mark me as brainliest

lcm of 5,12 and 20????,

Answers

Answer: 60

Step-by-step explanation:

y-2=-2/1(x-4) in slope intercept form

Answers

Answer:

y=2x-6

Step-by-step explanation:

y-2=-2/1(x-4)

y-2=2x-8

+2 +2

y=2x-6

A straight line has the point (4, 2) and has the slope 1. What is its y intercept?

Answers

Answer:    -2

================================================

Work Shown:

m = 1 is the given slope

The point (x,y) = (4,2) is on the line

Use slope intercept form to find the y intercept

y = mx+b

2 = 1*4 + b

2 = 4 + b

2-4 = b

-2 = b

b = -2 is the y intercept

The mean time it takes a certain pain reliever to begin reducing symptoms is 20 minutes with a standard deviation of 4.39 minutes.
Assuming the variable is normally distributed, find the probability that it will take the medication less than 25 minutes to begin to work.
A. 0.8729
B. 0.3708
C. 0.8708
D. 0.3729

Answers

20+25 is 45 so 4:39 and add that is A . My best guess

Solve: 5(x+2) = 3x + 5

Answers

Answer:

-2.5

Step-by-step explanation:

5(x+2) = 3x+5

5x+10=3x+5

5x-3x=5-10

2x=-5

x=-2.5

Answer: -5/2

Step-by-step explanation: the explanation and the answer above, -2.5 is correct but it can be simplified to -5/2 for those working in Apex

4/k =8/3 ​ what is k?

Answers

Answer:

1.5

Step-by-step explanation:

4 x 2 = 8, so k x 2 = 3

3 / 2 = 1.5

The teen club had a cupcake sale.
They sold 2/3 of their cupcakes in the morning. They sold 1/6 of their cupcakes in the afternoon. They sold 200 cupcakes altogether.
How many cupcakes were left to sell?

Answers

40. Let C be the total number of cupcakes. Then 2/3 x C + 1/6 x C = 200.

Combining , 5/6 x C = 200. So C = 240.

240–200= 40

Which equation below represents an equation in standard form?

Answers

Answer:

C

Step-by-step explanation:

standard form is ax + by = c, which is true for the third option.

Help me plz it’s number 11 I need this urgent

Answers

Answer:

f = -9

Step-by-step explanation:

3(x)

3(-9)

-27

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