Question: A key joint in a precision machining process has a lower specification limit of a width of 0.99 mm and an upper specification limit of
A key joint in a precision machining process has a lower specification limit of a width of 0.99 mm and an upper specification limit of 1.01 mm. The standard deviation is 0.005 mm and the mean is 1 mm. What is the process capability index for the precision machining process?
A) 0.01
B) 0.33
C) 0.67
D) 0.99
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