Control chart for the proportion of dissatisfied customers

Reference no: EM131384723

The number of customers who are not satisfied with the service provided in a retail store is found for 20 samples of size 100 and is shown in goven Table.

Construct a control chart for the proportion of dissatisfied customers. Revise the control limits, assuming special causes for points outside the control limits.

Sample	Number of dissatisfied customers	Sample	Number of dissatisfied customers
1	2	11	5
2	5	12	4
3	4	13	2
4	3	14	5
5	4	15	3
6	2	16	12
7	3	17	3
8	2	18	2
9	4	19	5
10	11	20	2

Reference no: EM131384723

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