A time study of a certain service task found an average time of 15 minutes and a standard deviation of 5, with a standard sample large enough that we are 95% confident that standard time is within 5% of its true value? Was a sample of 125 large enough?

Question

Quizplus · Accepted Answer

The Answer of A time study of a certain service task found an average time of 15 minutes and a standard deviation of 5, with a standard sample large enough that we are 95% confident that standard time is within 5% of its true value? Was a sample of 125 large enough?

A Time Study of a Certain Service Task Found an Average