Question: Margin of error, E = 20.3 cm; sample standard deviation, s = 321.0 cm Sample Sizes. In Exercise, assume that you want to construct a

Margin of error, E = 20.3 cm; sample standard deviation, s = 321.0 cm

Sample Sizes. In Exercise, assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the minimum sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given.

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