Question: How many observations should a time study analyst plan for in an operation that has a standard deviation of 21 minutes per proce? The goal

How many observations should a time study analyst plan for in an operation that has a standard deviation of 21 minutes per proce? The goal is to estimate the mean time per plece to within 0.8 minutes, with a confidence of 95.5 percent. (Do not found intermediate calculation. Round up your final answer to the next whole number) Anwwe is complete but not entirely correct. 4410

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