An automatic senson measures the diameter of holes in consecutive order. The results of measuring 25 holes

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An automatic senson measures the diameter of holes in consecutive order. The results of measuring 25 holes follow.


Sample Diameter Sample Diameter 1 9.94 14 9.99 9.93 15 10.12 3 10.09 16 9.81 9.98 9.73 17 5 10.11 18 10.14 6. 9.99 19 9.


(a) Estimate the process standard deviation.

(b) Set up a CUSUM control procedure, assuming that the target diameter is 10.0 millimeters. Does the process appear to be operating in a state of statistical control at the desired target level?

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Applied Statistics And Probability For Engineers

ISBN: 9781118539712

6th Edition

Authors: Douglas C. Montgomery, George C. Runger

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