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valentina_108 [34]
2 years ago
9

Recent study of alcohol drinking practices among college students found that the average number of drinks per week consumed was

3.5 with a standard deviation of 2.0. Suppose you examined the number of drinks per week consumed by a large sample of students from the population. Which of the following statements is true? (Assume the distribution of number of drinks per week is unimodal). A.) Distribution is right skewed
B.) Distribution is left skewed

C.) The normal normal model would be a good description of these data

D.) About 2.5% of students in our sample would drink more than 7.5 per drinks per week
Mathematics
1 answer:
VashaNatasha [74]2 years ago
4 0

Answer:

A

Step-by-step explanation:

Here as we can see that minimum drink a person can drink is 0 and is

(3.5-0)/2 =1.75 std deviation away from mean

which reflects that distribution;s right tail is more extended

therefore option A is correct: Distribution is right skewed

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Charlie runs a book rental business. He currently charges $3 per book and rents out an average of 38 books a day.
liberstina [14]

Answer:

b(x) = (3+0.5x) (38-4x)

Step-by-step explanation:

Let the generated revenue per day be b(x)

Let x be the number for every 50cents($0.5) price increase

Formula to be used to generate the revenue generated is expressed using the formula:

b(x) = Price × Quantity

Next is to derive the price and quantity function in terms of x.

For the price:

If he currently charges $3 per book

Let derive the price function for the model and x number of price increase for every 50 cents, then

Price = ($0.5 of x)+$3

Price = $3+$0.5x

Price = $(3+0.5x)

For the quantity:

Number of books rent out per day = 38

If for every 50cents increase in rental price x, the average business can expect to lose 4 rentals a day, then the total lost per quantity = 4x

Quantity per time = Number of books rent out daily - loss on each book

Quantity = $(38-4x)

Next is to substitute the price and quantity function into the revenue formula above:

Revenue = Price × Quantity

Revenue = (3+0.5x)(38-4x)

Hence the equation that models this scenario, where b(x) is the revenue generated and x is the number of 50 price increases is b(x) = (3+0.5x)(38-4x)

7 0
3 years ago
PLEASE HELP AGAIN ASAP!
Dovator [93]
15/5 goes to all of them..

15/5 = 3
8 0
3 years ago
If you pick a gumball at random, put it back, and then pick another gumball at random, what is the probability of picking a blue
AleksAgata [21]
The answer is B) 1/50

Probability of picking Blue-2/10 which is 1/5

Probability of picking Yellow-1/10

1/5x1/10=1/50
4 0
3 years ago
Read 2 more answers
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