Boeing. Inc is attempting to determine whether an existing machine is capable of milling an engine part that has a design specification of 4.0 mm \pm 0.12 mm . The standard deviation of the process is found to be 0.02mm The upper specification limit for this part = mm (round your response to thee decimal places). The lower specification limit for this part = mm (round your response to three decimal places). If the process operates at a mean of 4.0mm. Then the process capabity index (Cpt)= (round your response to three decimat p aces). From the abcve result of Cnk we can state that the process is capoble of about sigma performance