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The Specification Limits for the Weight of a Part Is Cp C_{p}

Question 92

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The specification limits for the weight of a part is 23.1 ± 2.4 grams.A manager collected a random sample of 40 units of the part from a metal stamping process.The sample average is 22.825 grams and the sample standard deviation is 1.375 grams.
a. What is the value of Cp C_{p} for this product?
b. What is the value of Cpk C_{p k} for this product?
c. What does the difference between the values of Cp C_{p} and Cpk C_{p k} tell you?

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