Question: . Surface defects have been counted on 25 rectangular steel plates, and the data are shown here. Set up a control chart for nonconformities using

Surface defects have been counted on 25 rectangular steel plates, and the data are shown here. Set up a control chart for nonconformities using these data. Does the process producing the plates appear to be in statistical control?

Plate Number Number of Nonconformities Plate Number of Number Nonconformities 1 1

Plate Number Number of Nonconformities Plate Number of Number Nonconformities 1 1 14 0 2 0 15 2 3 4 16 1 4 3 17 3 5 1 18 5 6 7 25 19 4 20 6 8 0 21 3 9 2 22 1 10 23 0 11 24 2 12 0 25 4 13 8

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