The data here consist of 25 samples of 4 observations each on the lengths of particular bolts manufactured for use in a large aircraft. The target length of these bolts is 37 centimeters.

1. Determine if this process is in statistical control
2. Given that the tolerance of these bolts is + .01centimeters, determine the sigma level, Cp and Cpk values of this process

Samples	Sub 1	Sub 2	Sub 3	Sub 4
1	36.99	37.02	37.04	37.01
2	37.01	37.04	37.03	36.98
3	36.98	37.03	37.03	36.99
4	37.00	37.00	37.00	36.98
5	36.98	36.99	36.99	36.96
6	36.99	36.96	36.94	36.97
7	36.98	36.97	37.01	36.96
8	36.93	36.96	36.96	36.93
9	36.91	36.99	36.95	36.92
10	36.97	36.99	36.95	36.94
11	37.05	37.05	37.05	37.05
12	37.00	37.04	37.11	37.05
13	37.05	37.04	37.06	37.04
14	37.08	37.08	37.03	37.08
15	37.08	36.99	37.07	37.06
16	36.93	36.99	37.03	37.03
17	37.06	36.94	37.06	36.98
18	36.94	36.96	36.96	37.01
19	37.01	36.98	37.03	37.00
20	37.03	37.07	36.99	37.03
21	36.99	36.99	37.01	37.00
22	37.01	37.00	37.00	36.99
23	37.02	37.00	37.00	37.00
24	37.01	37.01	37.00	37.03
25	36.99	37.00	37.00	36.99

Provide answers for below questions:

a . is the process in statistical control?

b. If not in statistical control why?

c. Cp?

d. CpK?

e. Sigma Level?