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16.04.2020 •
Mathematics
2. A pilot time study of 45 cycles of an assembly operation for a unique job showed an average normal time of 3.20 minutes and corresponding standard deviation of 1.28 min. Is this sample adequate in size for this plant to be 99% confident that the normal time is within 5% of the true value
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Ответ:
if u just add 40 to 2