Please help me answer Question 4 and 5 (Explain).

A machine has a standard deviation of 0.140 mm and a specification of 12.0 +/- 0.57 mm to make holes that need to be drilled into an electrical panel.

1) Please calculate the process capability ratio, Cp

A. 1.53

B. 1.36

C. 0.68

D. 9.2

2) Is the process capable?

A. Yes

B. No

C. It really depends on the reputation of the electrical panel manufacturer

D. Only if the Cp is less than 1

3) If the machine tooling wears and the standard deviation becomes larger at a rate of 0.001 mm per hole, how many holes can be drilled before the process becomes incapable? Please round to 2 decimal places when solving for process capability and 3 decimal places when solving for standard deviation.

A. 1 hole

B. 27 holes

C. 9 holes

D. 3 holes

4) If new machine tooling is installed, what would happen to Cp, the process capability ratio?

A. It would decrease

B. It would increase

C. It would stay the same

D. It would vary widely

5) If the machine tooling continues to wear and you were plotting a control chart,

A. You would discover nothing wrong

B. You would use a P type control chart for Attributes

C. You would discover a non-random pattern which could be identified

D. You would use a C type control chart for Attributes