Question: Part II a. (10%) A production process has capability indices Cp = 0.5 and Cpk = 0.4. What is the corresponding defect rate? Enter a

Part II a. (10%) A production process has

Part II a. (10%) A production process has capability indices Cp = 0.5 and Cpk = 0.4. What is the corresponding defect rate? Enter a number between 0 and 1, and keep at least 3 decimal places. (Hint: Draw a normal distribution curve and think about how Cp and Cpk are linked with defect rates through Z.) b. (8%) After we tune the machine, the team reported that the Cp = 0.5 and Cpk = 1.0 now. Which of the following statements is correct? a. The quality improved. b. The quality deteriorated. c. The quality stays the same. d. It is physically not possible. C. (8%) What does the concept of Cost of Poor Quality (COPQ) tell us? a. 1% defect equals to just 1% additional material cost. b. 1% defect can be overcome by putting 1% more effort to correct it. c. 1% defect is world-class performance in manufacturing. d. 1% defect requires a lot more correction and management than 1% additional effort

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