Prepare a run chart similar to Figure 9.11 for the occurrences of defective computer monitors based on the following data, which an analyst obtained from the process for making the monitors. Workers are given a 15-minute break at 10:15 a.m. and 3:15 p.m., and a lunch break at noon. What can you conclude?

Interval Start Time Number of Defects Interval Start Time Number of Defects Interval Start Time Number of Defects 8:00 1 10:45 0 2:15 0 8:15 0 11:00 0 2:30 2 8:30 0 11:15 0 2:45 2 8:45 1 11:30 1 3:00 3 9:00 0 11:45 3 3:30 0 9:15 1 1:00 1 3:45 1 9:30 1 1:15 0 4:00 0 9:45 2 1:30 0 4:15 0 10:00 3 1:45 1 4:30 1 10:30 1 2:00 1 4:45 3

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