The thickness of upper specification of 2.725mm anda a part is to have an lower specification of 2.675mm. the average of the process is currently 2.715mm with an estimated standard deviation of 0.007mm. the value of the process capability index cp for the process is oqual to 0.99 119 0.77 the value of the process capability index cpk for the process in item(4) 149 3 points above is equal to: 0.48 -0.48 0.84 -0.84