Assume that you want to construct a​ 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the​ 95% confidence...




Assume that you want to construct a​ 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the​ 95% confidence interval. The sample standard deviation is given.


Margin of​ error,
E=2.8

​minutes; sample standard​ deviation,
s=45.1

minutes



The required sample size is ___?


Jun 02, 2022
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