Consider a P-chart with subgroup size n = 50 and center line at 0.12. (a) Calculate the

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Consider a P-chart with subgroup size n = 50 and center line at 0.12.

(a) Calculate the LCL and UCL.

(b) Suppose that the true proportion defective changes from 0.12 to 0.18. What is the ARL after the shift? Assume that the sample proportions are approximately normally distributed.

(c) Rework part (a) and (b) with n = 100 and comment on the difference in ARL. Does the increased sample size change the ARL substantially?

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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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Question Posted: Jul 10, 2018 05:45 AM

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Consider a P-chart with subgroup size n = 50 and center line at 0.12. (a) Calculate the

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a b Assume p is normally distributed ...View the full answer

Applied Statistics And Probability For Engineers

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