Problem 2. Car doors are made and tested for blemishes. They were found to have an average of 5 blemishes per car door. There are 250 opportunities for blemishes to occur.

Find the control limits of the C-Chart. Assume that the process is centered and the specification is 2-sided. Cbar: UCLC: Cp: NOTE: 5 blemishes in Reject Rate (RR) = 0.02 LCLC: 250 opportunities and f(Z) = RR/2 = 0.01