An in-control process has an estimated standard deviation of 2 mm. The specification limits of the component being processed are 120 ± 8 mm. When the process mean shifts to 118 mm, the values of the process capability indices, Cp and Cpk, respectively are,
A. 1.000, 1.667
B. 1.333, 1.667
C. 1.333, 1.000
D. 1.000, 1.000
Answer:C
An in-control process has an estimated standard deviation of 2 mm. The specification limits of the component being processed are 120 ± 8 mm. When the process mean shifts to 118 mm, the values of the process capability indices, Cp and Cpk, respectively are,
A. 1.000, 1.667 B. 1.333, 1.667 C. 1.333, 1.000 D. 1.000, 1.000