Suppose that a quality characteristic is normally distributed with specifications from 10 to 30 units. The process
Question:
Suppose that a quality characteristic is normally distributed with specifications from 10 to 30 units. The process standard deviation is 2 units.
(a) Calculate the natural tolerance limits, fraction defective, PCR, and PCRk when the process mean is 20.
(b) Suppose that the process mean shifts higher by 1.5 standard deviations. Recalculate the quantities in part (b).
(c) Compare the results in parts (a) and (b) and comment on any differences.
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a The natural tolerance limits are 20 6 Because the mean o...View the full answer
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Related Book For
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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