1.8. Question 7 Marketing researchers have determined that there is a relationship between sales of canned tuna and the price of canned tuna. Specifically, SALES = 40, 710 - 430PRICE, where SALES are cans sold per week and PRICE is measured in cents per can. Suppose PRICE is (approximately) a normal random variable with mean μ = 75 cents and standard deviation σ 5 cents. That is PRICE~N(75, 25).\ (a) = (a) What is the expected value of SALES? (b) What is the variance of SALES? (c) Find the probability that more than 6, 300 cans are sold in a week. ↑↓孟曱 (b) (c)

1.8. Question 7 Marketing researchers have determined that there is a relationship between sales of canned tuna and the price of canned tuna. Specifically, SALES = 40, 710 - 430PRICE, where SALES are cans sold per week and PRICE is measured in cents per can. Suppose PRICE is (approximately) a normal random variable with mean μ = 75 cents and standard deviation σ 5 cents. That is PRICE~N(75, 25).\ (a) = (a) What is the expected value of SALES? (b) What is the variance of SALES? (c) Find the probability that more than 6, 300 cans are sold in a week. ↑↓孟曱 (b) (c)

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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