Posted by **dan** on Monday, January 23, 2012 at 10:02pm.

A researcher wishes to estimate the mean height of women aged between 60 and 65 in the US. She desires a margin of error of 0.2 inches. Past studies suggest that a population standard deviation deviation of 3.2 inches is reasonable. Estimate the minimum sample size needed to estimate the population mean with the stated accuracy.

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