Suppose that a quality characteristic is normally
Chapter 15, Problem 28E(choose chapter or problem)
Problem 28E
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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