Reconsider Exercise 15-3. Suppose that the variable is normally distributed with specifications at 220 ± 50. What

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Reconsider Exercise 15-3. Suppose that the variable is normally distributed with specifications at 220 ± 50. What is the proportion out of specifications? Estimate and interpret PCR and PCRk.

Exercise 15-3

Control charts are to be constructed for samples of size n = 4, and xÌ… and s are computed for each of 20 preliminary samples as follows:


20 20 Σs-271.6 Σ-4460 i=1 i=1

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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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