How many dieters be surveyed for true population mean

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You want to estimate the mean weight loss of people one year after following the Atkins diet. How many dieters must be surveyed if we want to be 95% confident that the sample mean weight loss is within 0.25 pound of the true population mean? Assume that the population standard deviation is known to be 10.6 lb.

Reference no: EM13115217

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