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OpenStudy (anonymous):
Given a level of confidence of 99% and a population standard deviation of 12, answer the following: (A) What other information is necessary to find the sample size (n)? (B) Find the Maximum Error of Estimate (E) if n = 78. (Show all work). Given the request for B, I can assume that A. is the error of estimate. But how do I go about finding the z-score with the information provided? I'm stomped on the formula to get that, as well as the formula to get the error of estimate
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