Find the sample mean, ow large a sample must be selected if

Find the sample mean

Reference no: EM1319837

Question: A university dean of students wishes to estimate the average number of hours students spend doing homework per week. The standard deviation from a previous study is 2.9 hours. How large a sample must be selected if he wants to be 99 percent confident of finding whether the true mean differs from the sample mean by 2.5 hours? Show your complete work.

Reference no: EM1319837

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