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Average proportion of dissatisfied customers

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Reference no: EM132799992

Thirty patients who check out of the Rock Creek Regional Hospital each week are asked to complete a questionnaire about hospital service. Since patients do not feel well when they are in hospital, they typically are very critical of the service. The Excel workbook posted to Moodle contains the number of patients who indicated dissatisfaction of any kind with the service for each 30-patient sample for a 16-week period.

Construct a control chart to monitor customer satisfaction at the hospital using 3 sigma limits for this data.

Sample # of dissatisfied Patients

1 6
2 3
3 10
4 7
5 2
6 9
7 11
8 7
9 6
10 6
11 5
12 3
13 2
14 8
15 12
16 8

-What is the average proportion of dissatisfied customers? (round to 2 decimal places)

-What is the 3 sigma upper control limit? (round to 4 decimal places)

Reference no: EM132799992

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