b) is there an non random behavior in the billing process that would require managment attention?

The manager of the customer service department of Data Tech Credit Card Service Company is concerned about the number of defects produced by the billing process. Every day a random sample of 250 statements was inspected for errors regarding incorrect entries involving account numbers, transactions on the customer's account, interest charges, and penalty charges. Any statement with one or more of these errors was considered a defect. The study lasted 30 days and yielded the data in the table below: 10 5 7 1 Samples 1-10 11-20 21-30 Number of Errors in Sample of 250 8 3 4 8 5 12 0 8 3 4 7 9 13 4 12 11 6 2 12 9 11 3 9 1 7 a. Construct a p-chart for the billing process. hits Set up the p-chart by specifying its control center line. (Enter your rosponses rounded to four decimal places. If your answer for LCL is negative, enter this value as 0.) UCLP p= LCLP