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ABC Corporation has been using statistical process control for several months. Their sampling plan calls for a sample size of 100 and the most recent five samples have found the number of defects to be 3, 18, 25, 11, and 15. Prepare a p-chart. Record the values for the UCL, center line, and LCL. In addition, note any points that are out of control. Use a z-value of three.
Sample
# Defective
1
19
9
32
2
8
10
40
3
25
11
39
4
22
12
5 20
23
13
48
6
20
14
7
24
15
42
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