A supplier was requested by a customer to produce information concerning their Cpk level. They were to estimate the expected percentage of failures that would occur if Cpk falls below 1.33. Consider...

A supplier was requested by a customer to produce information concerning their Cpk level. They were to estimate the expected percentage of failures that would occur if Cpk falls below 1.33. Consider how you would answer this question, assuming that there are both upper and lower specification limits.