Question: A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to

A quality analyst wants to construct a control

A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results: Machine #1 #2 #3 17 16 23 Measurements 15 15 25 18 24 23 17 25 22 What is the estimate of the mean of the sampling distribution for the sample mean? Multiple Choice 23 16 19

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