Answer: Suppose that a quality characteristic is normally
Chapter 15, Problem 30E(choose chapter or problem)
Problem 30E
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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