If the upper and lower specification limits of a process are .852 and .828,respectively,and the process standard deviation is .002,then the process capability index C_p is A) .024 B) 2.000 C) -2.000 D) 12.000

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Quizplus · Accepted Answer

The process capability index C_p is given by (USL-LSL)/(6*sigma), where USL is the upper specification limit, LSL is the lower specification limit, and sigma is the process standard deviation. Substituting the given values, we get C_p = (.852-.828)/(6*.002) = 2. Therefore, the best choice is B.

If the Upper and Lower Specification Limits of a Process