According to the National Association of Theater Owners, the average price for a movie in the United

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According to the National Association of Theater Owners, the average price for a movie in the United States in 2012 was $ 7.96. Assume the population standard deviation is $ 0.50 and that a sample of 30 theaters was randomly selected.

a. Calculate the standard error of the mean.

b. What is the probability that the sample mean will be less than $ 7.75?

c. What is the probability that the sample mean will be less than $ 8.10?

d. What is the probability that the sample mean will be more than $ 8.20?

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Business Statistics

ISBN: 9780321925121

2nd Edition

Authors: Robert A. Donnelly

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Question Posted: Jul 17, 2015 03:16 AM

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According to the National Association of Theater Owners, the average price for a movie in the United

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