4. Assume you are working on a project to improve customer service. Create a Pareto chart based on the information in the following table. Use the Pareto chart template from the companion Web site or sketch the chart by hand so that your resulting chart looks similar to Figure 7-12.

Customer complaints Frequency/week Customer is on hold too long 90 Customer gets transferred to wrong area or cut off 20 Service rep cannot answer customer’s questions 120 Service rep does not follow through as promised 40