A time study of a certain service task found an average time of 21 minutes, with a standard deviation of 0.92 with a standard sample large enough that we are 99% confident that standard time is within 2% of its true value? Was a sample of 37 larger enough?

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The Answer of A time study of a certain service task found an average time of 21 minutes, with a standard deviation of 0.92 with a standard sample large enough that we are 99% confident that standard time is within 2% of its true value? Was a sample of 37 larger enough?

A Time Study of a Certain Service Task Found an Average