1st Edition

ISBN: 9781938168208

Author: Barbara Illowsky, Susan Dean

Publisher: OpenStax College

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Chapter 8, Problem 5P

Use the following information to answer the next five exercises: The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephant calves. Fifty newborn elephants are weighed. The sample mean is 2.1-1 pounds. The sample standard deviation is 11 pounds

What will happen to the confidence Interval obtained, If 500 newborn elephants are weighed Instead of 50? Why?

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Chapter 8, Problem 4P

Chapter 8, Problem 6P

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