Question 21 (4 points) C-Spec, Inc., is attempting to determine whether an existing machine is capable of milling an engine part that has a key specification of 4 + 0.006 inches. After a trial run on this machine, C- Spec has determined that the machine has a sample mean of 4.005 inches with a standard deviation of 0.005 inch. Calculate the Cpk for this machine (round your answer to 3 decimal place) a) 0.670 b) 0.733 c) 0.067 d) 0.377 Question 22 (4 points) Refer to the previous question. Should C-Spec use this machine to produce this part? Why? a) No, the machine is capable of producing the part at the desired quality level. b) Yes, the machine is not capable of producing the part at the desired quality level. c) Yes, the machine is capable of producing the part at the desired quality level. d) No, the machine is not capable of producing the part at the desired quality level