Question: Question 4: Use 4 decimal places A control chart is to be established on a process producing refrigerators. The inspection unit is one refrigerator, and

Question 4: Use 4 decimal places A control chart is to

Question 4: Use 4 decimal places A control chart is to be established on a process producing refrigerators. The inspection unit is one refrigerator, and a chart for nonconformities is to be used. As preliminary data, 16 nonconformities were counted in inspecting 30 refrigerators. (a) What are the three-sigma control limits? (b) What is the exact -risk for the control chart in part (a)? (c) What is the exact -risk if the average number of defects is actually two c=2

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