a. 1. In a control chart, what would be the effect on the control limits if the sample size varied from one sample to the next?
2. Define Cpk and explain what a Cpk of 1.0 means. What is Cp?
3. What does a run of 5 points above or below the centerline in a control chart imply?
4. What are the acceptable quality level (AQL) and the lot tolerance percentage defective (LTPD)? How are they used?
b. 1. What is a run test, and when is it used?
2. Discuss the managerial issues regarding the use of control charts.
3. What is an OC curve?
4. What is the purpose of acceptance sampling?
5. What two risks are present when acceptance sampling is used?
6. Is a capable process a perfect process? That is, does a capable process generate only output that meets specifications? Explain.