Question 2: A given model of large radar dish represents the area of opportunity in which nonconformities may occur. Results of quality check for 25 radar assemblies are as follows:
|
Radar Assembly Number
|
Number of Nonconformities
|
|
1
|
25
|
|
2
|
60
|
|
3
|
28
|
|
4
|
65
|
|
5
|
91
|
|
6
|
56
|
|
7
|
40
|
|
8
|
54
|
|
9
|
90
|
|
10
|
44
|
|
11
|
62
|
|
12
|
81
|
|
13
|
70
|
|
14
|
75
|
|
15
|
24
|
|
16
|
50
|
|
17
|
70
|
|
18
|
56
|
|
19
|
21
|
|
20
|
88
|
|
21
|
34
|
|
22
|
82
|
|
23
|
53
|
|
24
|
102
|
|
25
|
64
|
a- Determine the centerline (show your calculations)
b- Determine the control limits (show your calculations)
c- Use MINITAB to develop the appropriate control chart
d- Are there any indications of lack of control?
e- What to do next?