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The marketing department of a large organization is interested in being responsive to its customers' needs. Accordingly, each week it monitors the number of complaints received.

It is possible for a customer to have more than one complaint. Table shows the feedback from its customers. Construct an appropriate control chart and comment on the level of customer service by the organization.

TABLE : Customer Complaints in an Organization
Sample Number Responded Number of Complaints Sample Number Responded Number of Complaints
1 75 8 14 90 10
2 120 12 15 145 18
3 110 6 16 150 20
4 135 15 17 124 16
5 150 12 18 108 12
6 175 28 19 115 15
7 80 11 20 88 12
8 70 14 21 92 14
9 130 20 22 95 15
10 105 10 23 120 18
11 118 26 24 135 6
12 130 18 25 130 5
13 125 16


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  • Reference No.:- M92198409

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