Each hour, a 10 m 2 section of fabric is inspected for flaws. The numbers of flaws
Question:
Each hour, a 10 m2section of fabric is inspected for flaws. The numbers of flaws observed for the last 20 hours are as follows:
a. Compute the upper and lower 3σ limits for a c chart.
b. Is the process in control? If not, when is it first detected to be out of control?
Transcribed Image Text:
38 35 35 49 33 48 40 47 45 46 41 53 36 41 51 63 35 58 55 57
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