Estimate the percentage who weigh more in pounds

Reference no: EM13136674

body weights are normally distributed with a mean of 152 pounds and a standard deviation of 26 pounds. How many people must be surveyed if we want to estimate the percentage who weigh more than 180 pounds? Assume that we want 96% confidence that the error is no more than 2 percentage points.

Reference no: EM13136674

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