Question: A certain process is under statistical control and has a mean value of \(\mu \) =130 and a standard deviation of \(\sigma \) = 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 specification?