Question: A retail store manager is trying to improve and control the rate at which cashiers sign customers up for store credit cards. The manager takes
A retail store manager is trying to improve and control the rate at which cashiers sign customers up for store credit cards. The manager takes several samples of size 50. He finds that each sample of 50 contained 5 credit card signups on average. Find the p-chart control limits at the 3-sigma level
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