You are the newly appointed administrator at a local hospital, and your first project is to…

You are the newly appointed administrator at a local hospital, and your first project is to investigate the quality of the patient meals put out by the food-service department. You conducted a 10-day survey by submitting a simple questionnaire to the 400 patients with each meal, asking that they simply check off that the meal was either satisfactory or unsatisfactory. For simplicity in this problem, assume that the response was 1,000 returned questionnaires from the 1,200 meals each day. The result are as follows:

NUMBER OF UNSATISFACTORY MEALS

SAMPLE SIZE

December 1

74

1,000

December 2

42

1,000

December 3

64

1,000

December 4

80

1,000

December 5

40

1,000

December 6

50

1,000

December 7

65

1,000

December 8

70

1,000

December 9

40

1,000

December 10

75

1,000

600

10,000

Construct a p chart based on the questionnaire results, using a confidence interval of 95.5 percent, which is two standard deviations. What comments can you make about the result of the survey?

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