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Question
Management is concerned that workers create more product defects at the very beginning and end of a work shift than at other times of their eight-hour workday. Construct a scatter diagram with the following data collected last week. Is management justified in its belief?
| Number of Defects | |||||
| Monday | Tuesday | Wednesday | Thursday | Friday | |
| First hour at work | 12 | 9 | 6 | 8 | 7 |
| Second hour at work | 6 | 5 | 3 | 4 | 5 |
| Third hour at work | 5 | 2 | 4 | 3 | 3 |
| Fourth hour at work | 4 | 0 | 5 | 2 | 3 |
| Fifth hour at work | 1 | 6 | 2 | 4 | 5 |
| Sixth hour at work | 4 | 3 | 3 | 2 | 1 |
| Seventh hour at work | 7 | 4 | 4 | 6 | 3 |
| Eighth hour at work | 5 | 7 | 8 | 5 | 9 |
Answer
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