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.