Quality Style manufactures self-assembling furniture. To reduce the cost of retu

Question

Quality Style manufactures self-assembling furniture. To reduce the cost of returned orders, the manager of its quality control department inspects the final packages each day using randomly selected samples, The defects include wrong parts, missing connection parts, parts with apparent painting problem and parts with rough surfaces. The average defect rate is three perday. What type of control chart should be used P-chart R-chart x-bar chart c-chart Construct a control chart with 3-sigma control limits: (a) CL, (b) UCL, (c) LCL.

Explanation / Answer

here we can use p-chart as we need to check the proportion of defected items

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