Suppose that a 1-gallon can of paint covers 513.3 square feet on average with a standard deviation of 31.5 square feet. (a) What is the probability that the sample mean area covered by a sample of 40 of these 1-gallon cans will be more than 520 square feet? (b) What is the probability that the sample mean area covered by a sample of 40 of these 1-gallon cans will be anywhere between 510 to 520 square feet?

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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Suppose that a 1-gallon can of paint covers 513.3 square feet on average with a standard deviation of 31.5 square feet.
(a) What is the probability that the sample mean area covered by a sample of 40 of these 1-gallon cans will be more than 520 square feet?
(b) What is the probability that the sample mean area covered by a sample of 40 of these 1-gallon cans will be anywhere between 510 to 520 square feet?

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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,