Suppose that a quality characteristic is normally distributed with specifications at 100 20. The process standard
Question:
Suppose that a quality characteristic is normally distributed with specifications at 100 ± 20. The process standard deviation is 6.
(a) Suppose that the process mean is 100. What are the natural tolerance limits? What is the fraction defective? Calculate PCR and PCRk and interpret these ratios.
(b) Suppose that the process mean is 106. What are the natural tolerance limits? What is the fraction defective? Calculate PCR and PCRk and interpret these ratios.
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a The natural tolerance limits are 100 20 Since the process natural tolerance limits lie in...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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