Suppose that we are making an auto part and that the mean length of the part is 5 inches with standard deviation of 0.25 inches, and the length is normally distributed. The upper pecification limit is 5.5 inches and the lower specification limit is 4.2 inches. The z-score table provided on the next page. a. What is the process capability index, Cpk? b. Under this process, what is the rate of defects per unit (DPU) and the defects per million units (DPMU)? c. If you have five auto parts made under this process, what is the probability that all five of them are not defective?

Suppose that we are making an auto part and that the mean length of the part is 5 inches with standard deviation of 0.25 inches, and the length is normally distributed. The upper pecification limit is 5.5 inches and the lower specification limit is 4.2 inches. The z-score table provided on the next page. a. What is the process capability index, Cpk? b. Under this process, what is the rate of defects per unit (DPU) and the defects per million units (DPMU)? c. If you have five auto parts made under this process, what is the probability that all five of them are not defective?

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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