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A restaurant is improving its processes, and is currently focusing on the final bill presented to customers. The manager samples 5 0 bills per day
A restaurant is improving its processes, and is currently focusing on the final bill presented to customers. The manager samples bills per day for days, and checks to see how many are incorrect using a zvalue of
Day
Incorrect Bills
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Is the billing process consistent in other words, is it in control or do special cause events appear to be present?
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What is the UCL?
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What is the LCL
You collect two more days of data, again sampling bills per day, and add the results incorrect bills on day and on day to the control chart.
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How many days are now outside the control limits
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What is the UCL?
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What is the LCL
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