What percent of product expected fall outside specification


A certain process is under statistical control and has mean value of M=130 and a standard deviation=8. The specifications for this process are USL=150, LSL=100.

a. Calculate Cp and Cpk
b. Which of these indices is a better measure of the process capability? Why?
c. Assuming a normal distribution, what percent of the product can be expected to fall outside the specifications?

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Operation Management: What percent of product expected fall outside specification
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