Question 875286
Q:
Find the minimum sample size required to estimate a population mean μ of daily	
randfall. We want 99% confidence that the sample mean is within .010 inches of	
the population mean, and the population standard deviation is known to be .212 inches.	
A:
{{{z[0.005] }}} = 2.5758
n = {{{((2.5758*.212)/.010)^2}}} ≈ 2982
Therefore, the required sample size is at least {{{highlight(2982)}}}