Question: Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 97

Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 97 percent of the time.

Standard Mean Work Deviation Observed Time Element (minutes) (minutes) 0.20 0.10 0.15 0.10 1.10 0.80 0.90 1.00

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