14. A simple random sample with n 54 provided a sample mean of 22.5 and a...

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14. A simple random sample with n 54 provided a sample mean of 22.5 and a sample standard deviation of 4.4.

a. Develop a 90% confidence interval for the population mean.

b. Develop a 95% confidence interval for the population mean.

c. Develop a 99% confidence interval for the population mean.

d. What happens to the margin of error and the confidence interval as the confidence level is increased?

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Essentials Of Statistics For Business And Economics

ISBN: 9780324568608

5th Edition

Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams

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Question Posted: Nov 06, 2024 06:00 AM

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14. A simple random sample with n 54 provided a sample mean of 22.5 and a...

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Essentials Of Statistics For Business And Economics

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