Wilson, Ryan, and Reed is a large certified public accounting (CPA) firm in Charleston, South…

Wilson, Ryan, and Reed is a large certified public
accounting (CPA) firm in Charleston, South Carolina. It has been monitoring the
accuracy of its employees and wishes to get the number of accounts with errors
under statistical control. It has sampled 100 accounts for each of the last 30
days and has examined them for errors. The data are presented in the file
Accounts. a. Construct the relevant control chart for the account process. b.
What does the chart indicate about the statistical stability of the process?
Give reasons for your answers. c. Suppose that for the next 3 days, sample
sizes of 100 accounts are examined with the following results:

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Plot the appropriate data on the control chart and indicate
whether any of the control chart signals are present. Discuss your results

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