Question: In a control chart application, we have found that the grand average over all past samples of 6 units is = 30 and = 5.

In a control chart application, we have found that the grand average over all past samples of 6 units is = 30 and = 5.

a. Set up and R control charts.

b. The following measurements are taken from a new sample: 38, 35, 27, 30, 33, and

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