Find how large sample must be drawn to be confident

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Reference no: EM13137448

Weights of women in one age group are normally distributed with a standard deviation of 21 pounds. a researcher wishes to estimate the mean weight of all women in this age group. Find how large a sample must be drawn in order to be 90 percent confident that the sample mean will not differ from the population mean by more than 3.7 pounds.

Reference no: EM13137448

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