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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

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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 = 7.4 grams; sample standard deviation, s =68.9 grams The required sample size is| |. (Round up to the nearest whole number.)

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