Ezra McMahan is the owner of Sharkey Chevy, Buick, GMC. At the start of the year, Ezra instituted a customer opinion program to find ways to improve service. The day after the service is performed, Ezra’s administrative assistant calls the customer to find out whether the service was performed satisfactorily and how the service might be improved. A summary of the complaints for the first 6 months follows. Develop a Pareto chart. How should Ezra prioritize the complaints to improve the quality of service?

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Complaint Problem not corrected Error on invoice Unfriendly atmosphere Frequency 38 8 12 Complaint Price too high Wait too long for service Frequency 23 10