Question: A test engineer samples 8 diapers from a certain manufacturing process and respectively records 12, 14, 13, 10, 7, 4, 8, and 10 defects. What

A test engineer samples 8 diapers from a certain manufacturing process and respectively records 12, 14, 13, 10, 7, 4, 8, and 10 defects. What are the c-Chart control limits for a 3-sigma level? Is the process in control?

(a) UCLc =19.12,LCLc =0.38; process is in control

(b) UCLc =12.87,LCLc =6.63; process is out of control

(d) UCLc =19.12,LCLc =0.38; process is out of control

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