An air-conditioning repair department manager has documented the primary reason for 200 service calls in the previous month. The manager made a check sheet for the 5 problem categories for each of the 2 customer types. A frequency table is constructed below: Problem Categories Types of Customers Frequency Commercial 32 Noisy Residential 58 Commercial 11 Equipment Failure Residential 15 Commercial 30 Runs Warm Residential 26 Commercial 10 Odor Residential 12 Commercial Miscellaneous Residential 4 By summing the frequencies of the two customer types for each problem category, construct a Pareto chart (depicting the frequency and the cumulative percentage) of the five problem categories.

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