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Surface defects have been counted on 25 rectangular steel plates, and the data are shown below. Set up a control chart. Does the process producing the plates appear to be in statistical control?
Plate Number
Numberof Defects
Number ofDefects
1
2
14
10
3
15
4
16
17
6
5
18
19
7
20
8
0
21
9
22
23
11
24
12
25
13
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