Question: A certain process is under statistical control and has a mean value of = 130 and a standard deviation of = 8. The

A certain process is under statistical control and has a mean value of μ = 130 and a standard deviation of σ = 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 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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a c p 150 100 6 8 5048 10417 c pk MIN 1501303 8 130100324 MIN 2024 3024 08333 b c pk is a better mea... View full answer

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