Question: Efficiency experts study the processes used to manufacture items in order to make them as efficient as possible. One of the steps used to manufacture

Efficiency experts study the processes used to manufacture items in order to make them as efficient as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of 100 clamps, the mean time to finish this step was 50.1 seconds. Assume that the population standard deviation is o= 12 seconds.

(Answer rounded 3 decimal places)

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