Question: Please help my revision question. Refer below 2, A process is in statistical control with X(=) = 199 and E = 3.57 The control chart

Please help my revision question. Refer below

2, A process is in statistical control with X(=) = 199 and E = 3.57 The control chart uses a sample size of n = 4. Specications are at 200 :I: 3. The quality characteristic is normally distributedt {a} Estimate the C}, and Cpk- (b) How much improvement could be made in process performance if the mean could be centered at the nominal value? Answers: ((1) L5? and 3.37; (11) From 19ppm to 2+6ppm

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