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A High-Paced Discount Store in Los Angeles Notices That Checking

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Essay

A high-paced discount store in Los Angeles notices that checking errors have increased recently. They plan to use control charts with three standard deviation control limits to monitor the process. They decide to take a sample of 100 transactions over 10 days. The number of transactions with errors for each day was 5, 7, 6, 5, 6, 4, 6, 3, 10, and 8.
a.What is the center line for the p-chart?
b.What is the upper control limit for the p-chart?
c.What is the lower control limit for the p-chart?


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