What is the value of the centerline

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1. Consider a firm that decided to use a c-chart to help keep track of the number of telephone requests received daily for information on a given product. Over 30-day period, an average of 19 requests per day are received. What is the value of the centerline?

2. Consider a firm that decided to use a c-chart to help keep track of the number of telephone requests received daily for information on a given product. Over a 30-day period, an average of 47 requests per day are received. What is a three-sigma upper control limit for c-chart?

Reference no: EM132813501

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