The diameter of a brand of tennis balls is approximately normally distributed, with a mean of 2.63

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The diameter of a brand of tennis balls is approximately normally distributed, with a mean of 2.63 inches and a standard deviation of 0.03 inch. If you select a random sample of nine tennis balls,

a. What is the sampling distribution of the mean?

b. What is the probability that the sample mean is less than 2.61 inches?

c. What is the probability that the sample mean is between 2.62 and 2.64 inches?

d. The probability is 60% that the sample mean will be between what two values symmetrically distributed around the population mean?

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Business Statistics A First Course

ISBN: 9780135177785

8th Edition

Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan

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Question Posted: Feb 17, 2023 01:17 AM

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The diameter of a brand of tennis balls is approximately normally distributed, with a mean of 2.63

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