Course Solutions Uncategorized (Answered) : For a given item the upper specification limit is 60 and the lower specification limit is 37. It can be assumed that: 1) the pro

(Answered) : For a given item the upper specification limit is 60 and the lower specification limit is 37. It can be assumed that: 1) the pro

For a given item the upper specification limit is 60 and the lower specification limit is 37. It can be assumed that: 1) the process mean is centered in the specification interval; and 2) the process standard deviation is 2.3. What is this process’ capability ratio?

Expert Answer


As USL = 60

LSL = 37

S= Sigma = Std Dev =2.3

Hence process capability ration = CP index= (UCL – LCL)/6S = 23/(6*2.3) = 10/6 =1.667

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