Problem:

The Capital Superstore decides to track customer complaints as part of their ongoing customer satisfaction improvement program. After collecting data for two months, their check sheet appears as follows:

Type of Problem              Frequency (number of times)

Batteries not included                      5

Items damaged when received           5

Literature not included in box           12

Parts missing                                 18

Unit not working                             3

Item received late                          7

Required:

Question 1) If they construct a Pareto chart, how many of these categories are required to make up 70 % of all complaints?

A. 1

B. 2

C. 3

D. 4

E. 5

Solve the problem and show all work.