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

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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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Statistics For Business And Economics

ISBN: 9780324783247

11th Edition

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

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Question Posted: Jul 18, 2024 07:06 AM

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

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Statistics For Business And Economics

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