Question: a) Construct a control chart for proportion defective. b) Another sample was taken. This sample had 18 breaks. What action should BestRope take, if any?

a) Construct a control chart for proportion defective.

b) Another sample was taken. This sample had 18 breaks. What action should BestRope take, if any?

c) BestRope are considering changing its method of control. How would you change the data collection method if it were decided to use mean and range charts?

d) Which method of control is preferable in this situation? (Proportion defective or mean/range charts). Explain briefly.

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