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.
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Sample
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# Defective
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Sample
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# Defective
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1
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19
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9
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32
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2
|
8
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10
|
40
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3
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25
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11
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39
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4
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22
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12
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32
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5 20
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23
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13
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48
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6
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20
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14
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32
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7
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24
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15
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42
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8
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48
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