Question: How many work cycles should be timed to estimate the average cycle time to within 2 percent of the sample mean with a confidence of

How many work cycles should be timed to estimate the average cycle time to within 2 percent of the sample mean with a confidence of 98.0 percent if a pilot study yielded these times (minutes): 4.0, 4.5, 5.0, 4.5, 4.5, and 4.0? The standard deviation is 0.376 minutes per cycle.

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