A recent survey shows that the probability of a college student drinking alcohol is 0.6. Further, given that the student is over 21 years old, the probability of drinking alcohol is 0.8. It is also known that 30% of the college students are over 21 years old. Of the students who are not over 21, what is the probability they drink alcohol? Group of answer choices

Answer: 0.5143

Step-by-step explanation:

Probability of students who are over 21 years old = 30% = 0.3

Probability of students who are under 21 years old = 100% - 30% = 70% = 0.7

Probability of drinking alcohol for over 21 = 80% = 0.8

Probability of not drinking alcohol for over 21 = 100%- 80% = 20% = 0.2

Let the probability of the students who are not over 21, that drink alcohol be p.

Total probability of a college student drinking alcohol = (0.3 × 0.8) + (0.7 × p)

0.6 = (0.3 × 0.8) + (0.7 × p)

0.6 = 0.24 + 0.7p

0.7p = 0.6 - 0.24

0.7p = 0.36

p = 0.36/0.7

p = 0.5143

The probability of the students who are not over 21, that drink alcohol is 0.5143.

please asap help im desperate.......................

Which statement about proportional relationships is false? A proportional relationship must graph as a line. A graph of a proportional relationship must pass through (0, 0). Each point (or pair) in a proportional relationship must share the same ratio. Each point (or pair) in a proportional relationship must share the same difference.

A truck can be rented from Company for 50 dollars a day plus 0.50 per mile. Company B charges 30 dollars a day plus 0.90 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for company A and company B are the same.

Que es un paralelogramo

Describe how the graph of y= x2 can be transformed to the graph of the given equation. y = x2 + 13 Shift the graph of y = x2 right 13 units. Shift the graph of y = x2 left 13 units. Shift the graph of y = x2 down 13 units. Shift the graph of y = x2 up 13 units.

Help me with this questions please, brainiest reward

Your target number of calories is 2400 per day to lose weight, but you are consuming 3200 calories per day. Your target is what percentage of your consuming calories?

Look at the table showing prices of different items at a grocery store.
Items for Sale
Watermelons
$14.97 for 3
Boxes of Cereal
$15.80 for 4
Bags of Pretzels
$10.77 for 3
Ice Cream
$18.36 for 4
Which items cost less than $3.99 per item?
O boxes of cereal and bags of pretzels
O ice cream and watermelons
O bags of pretzels and watermelons
watermelons and boxes of cereal

Add. (f + 3) + (2f + 8)

A financial transaction that is added to a ledger balance is called a credit
Please select the best answer from the choices provided
OT
OF

Solve for r in terms of s, t, and u.
t=u-s+r

What is 40% of 50,000

Greg mixes 10 cans Black paint with 16 cans of white paint to get a gray paint. How many cans of black paint will he need to mix with 96 cans of white paint to get the same gray color?

Write the number as a product of prime factors. 520?

____________ prove that the people traded over long distances. a. Ancient tree stumps, discovered by scientists, b. Written records c. Buildings that were built with logs from mountains about 50 miles away d. Oral traditions

e
rational
irrational

what pecent is 425 of 500

You are selling candy bars for the school to
pay for your senior trip which costs $300. If
each candy bar costs $1.25 and you already
have $50 in sales. How many more candy
bars do you need to sell?

(3 + 2i) - (5 -7i) Write answer in standard form a +bi

Twelve more than x is greater than fourteen

Right now, Molly is twice as old as Nancy. Zander is 6 years younger than Molly. Which expression represents Molly's current age in terms of Nancy's? Which expression represents Molly's current age in terms of Zander's? Nancy is currently 10 years old, and Zander is 14. How old is Molly?​

Is this correct as well?

2. Jason wants to plant 54 carrot seeds and 27 onion bulbs. He would like to plant them so that there are the same number of plants in each row, and each row only has one type of plant. a. What is the greatest number of plants he can have in each row? SHOW YOUR WORK b. How many rows of carrots will he have? Onions? SHOW YOUR WORK

Yoko has a rectangular poster that is 15centimeters long and 12 centimeters wide. What is the area of the poster in square meters.

The summit of a mountain pass is 8,050 ft above sea level. the valley below is 12 and 1/2 ft below sea level. what is the vertical distance between the summit and the valley

please please help me ​

I really need help with this question

d= V(x2 – x1)2 + (y2 – yy)2

12(p - 5) - 12 = 0
Please help quick!!!!! This is due at 8:00 AM!!!!!

Solve inequality.
|3n-2|-2<1

2 - 6k = 5 - 3k - 12 k =