2) a customer relationship manager decided to track customer complaints as part of his ongoing customer satisfaction improvement program. after collecting data for two months, their check sheet appears as follows: type of problem frequency (number of times) call went to a voice mail 8 items damaged when received 21 literature not in the box 9 parts missing 13 unit not working 2 delivery was late 3 construct a pareto chart including the cumulative % frequency. what is the cumulative percentage of the three leftmost bars?