The following table shows the total number of imperfections (nonconformities) in the given number of finished rolls of paper for 5 hours. Set up and draw a control chart for imperfections per roll of paper. Does the process seem to be in statistical control?
Number of rolls Produced |
Hour |
total number of Imperfections |
Number of rolls Produced |
1 | 12 | 4 |
2 | 8 | 4 |
3 | 9 | 3 |
4 | 10 | 5 |
5 | 6 | 4 |
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