A Metal-Cutting Operation Has a Target Value of 20 and Consistently

question 176

Multiple Choice

A metal-cutting operation has a target value of 20 and consistently averages 19.8 with a standard deviation of 0.5. The design engineers have established an upper specification limit of 22 and a lower specification limit of 18. What is the process capability index?

• A) 1.20
• B) 1.33
• C) 1.46
• D) 1.66

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