A supplier makes packaging cartons for a customer, with a length normally distributed around a mean of 150mm. Due to the cavity
in the filling machine, the carton must be no longer than 157 mm and no shorter than 143mm. The process standard deviation is 2.5mm. a. What is the process capability Cp?
b. Calculate the percentage of non-conforming cartons of the process. Please type your answer in numerical numbers with 4 decimal places (not percentages).