Explain how might you use quality tools to determine, Operation Management

a) Determine the value of the p-bar, the mean fraction defective. Then determine the control limits for the p-chart using 99.73% confidence level (3 standard deviations). Is this process in control? If not, which samples were out of control?

b) How might you use quality tools to determine the source of the billing defects and where might you start your improvement efforts to eliminate the causes?

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