Determine sample size needed if standard time estimate


Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 99 percent of the time.

Work Element

Standard Deviation (minutes)

Mean Observed Time (minutes)
1 0.20 1.10
2 0.10 0.80
3 0.15 0.90
4 0.10 1.0

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Operation Management: Determine sample size needed if standard time estimate
Reference No:- TGS089704

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