A supplier was requested to deliver order within 25 to 35 days after receiving the Purchase Order.

Use Delivery Time Data to perform the following:

1. Calculate the capability indices and provide your comments on the results.
2. Provide your recommendation to improve the supplier performance.

Delivery Time (Days)
29.73	Subgroup size = 5
29.34
34.07
27.62
28.78
30.84
32.96
30.01
29.03
27.34
26.27
30.08
30.09
35.88
33.24
34.04
32.11
35.74
28.52
25.63
36.87
29.32
27.71
27.79
32.46
31.60
28.72
23.38
30.23
28.15
30.53
36.42
40.31
27.16
29.51
28.66
36.25
32.18
31.43
33.19
31.67
34.30
33.59
28.56
25.83
29.98
35.38
30.33
28.17
26.82
28.23
33.34
33.32
34.48
27.93
29.26
28.76
31.34
27.61
33.66
26.04
30.52
34.20
31.73