A utility has a department which does nothing but change the addresses of customers on the company's
Question:
A utility has a department which does nothing but change the addresses of customers on the company's information systems when customers move house. The process is deemed to be in control at the moment and a random sample of 2000 transactions shows that 2.5 per cent of these transactions had some type of error. If the company is to use statistical process control to monitor error levels, calculate the mean, upper control level (UCL) and lower control level (LCL) for its SPC chart.
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Related Book For 
Operations Management
ISBN: 9780273708476
5th Edition
Authors: Nigel Slack, Stuart Chambers, Robert Johnston
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