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2. We learnt from the power point slides, the importance of process capability. Six-sigma concept and application are closely related with process capability, which is another way to check whether six-sigma requirements are met. Using the information from Q 1 above, a. Compute Cp and Cpk. (10) b. Suppose you obtained a sample of shafts and computed the mean and standard deviation of the production process to be as follows: Mean diameter = 3.001 inches, process standard deviation = 0.0015 inches. Your tolerance for the shaft diameter is still = 0.005 inches. Compute Cp and Cpk. (20) c. What proportion of the items produced with the information in (b) above will be rejected? How many out of 5000 shafts will be rejected? Use the Z-table? (10) d. What should be the standard deviation of the production process in order to satisfy Cp and Cpk, both to be > 1? (20) 2. We learnt from the power point slides, the importance of process capability. Six-sigma concept and application are closely related with process capability, which is another way to check whether six-sigma requirements are met. Using the information from Q 1 above, a. Compute Cp and Cpk. (10) b. Suppose you obtained a sample of shafts and computed the mean and standard deviation of the production process to be as follows: Mean diameter = 3.001 inches, process standard deviation = 0.0015 inches. Your tolerance for the shaft diameter is still = 0.005 inches. Compute Cp and Cpk. (20) c. What proportion of the items produced with the information in (b) above will be rejected? How many out of 5000 shafts will be rejected? Use the Z-table? (10) d. What should be the standard deviation of the production process in order to satisfy Cp and Cpk, both to be > 1? (20)