You are the newly appointed assistant 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 results are as follows: NUMBER OF UNSATISFACTORY MEALSSAMPLE SIZEDecember 1741,000December 2421,000December 3641,000December 4801,000December 5401,000December 6501,000December 7651,000December 8701,000December 9401,000December 10751,000 60010,000Determine the p¯�¯ , Sp�� , UCL and LCL based on the questionnaire results, using a confidence interval of 95.5 percent, which is two standard deviations.Note: Round your answers to 4 decimal places. What comments can you make about the process?multiple choiceThe process is out of statistical control.The process is in statistical control.

(a)pbar=0.06Sp=0.00751UCLp=0.075LCLp=0.045 (b) The process is out of statistical…

Answered: You are the newly appointed assistant…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

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You are the newly appointed assistant 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 results 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

Determine the p¯�¯ , Sp�� , UCL and LCL based on the questionnaire results, using a confidence interval of 95.5 percent, which is two standard deviations.

Note: Round your answers to 4 decimal places.
What comments can you make about the process?

multiple choice
- The process is out of statistical control.
- The process is in statistical control.

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