Mathematics, 25.04.2020 00:47, Adailson8890

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 6.2 hours. how large a sample must be selected if he wants to be 99% confident of finding whether the true mean differs from the sample mean by 1.5 hours.

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A university dean of students wishes to estimate the average number of hours students spend doing ho...