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Given a process with design nominal = 4 Mils +/- 4 (or USL = 8 and...

Given a process with design nominal = 4 Mils +/- 4 (or USL = 8 and LSL = 0) and Cpk = 1.33. A company decided to implement a system of calling the engineer to adjust the process every time a sample (n = 4) average (xbar) was equal to nominal + ½ specification limits (process average = 6 or 2) What is the total probably of the engineer being called to adjust the process: _____%, or One out of ___times

If the company used a control chart for this process, X double bar average = 4; what should the limits be UCLx____________LCLx____________UCLr____________LCLr__________RR_______________ppm

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