A regional manager of a telephone company is responsible for processing requests concerning additions, changes, and deletions of telephone service. She forms a service improvement team to look at the corrections to the orders in terms of central office equipment and facilities required to process the orders that are issued to service requests. Data collected over a period of 30 days are stored in Telespc.
a. Construct a p chart for the proportion of corrections. Does the process give an out-of-control signal?
b. What should the regional manager do to improve the processing of requests for changes in telephone service?
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