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 SAMPLE MEALS SIZE December 1 83 1,000 December 2 64 1,000 December 3 53 1,000 December 4 59 1,000 December 5 74 1,000 December 6 80 1,000 December 7 61 1,000 December 8 49 1,000 December 9. 84 1,000 December 10 58 1,000 665 10,000 a. Determine the ē, 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. p bar Sp UCL LCL b. What comments can you make about the process? The process is out of statistical control. O The process is in statistical control.

Understanding Business
12th Edition
ISBN:9781259929434
Author:William Nickels
Publisher:William Nickels
Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment
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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
SAMPLE
MEALS
SIZE
December 1
83
1,000
December 2
64
1,000
December 3
53
1,000
December 4
59
1,000
December 5
74
1,000
December 6
80
1,000
December 7
61
1,000
December 8
49
1,000
December 9.
84
1,000
December 10
58
1,000
665
10,000
Transcribed Image Text: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 SAMPLE MEALS SIZE December 1 83 1,000 December 2 64 1,000 December 3 53 1,000 December 4 59 1,000 December 5 74 1,000 December 6 80 1,000 December 7 61 1,000 December 8 49 1,000 December 9. 84 1,000 December 10 58 1,000 665 10,000
a. Determine the ē, 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.
p bar
Sp
UCL
LCL
b. What comments can you make about the process?
The process is out of statistical control.
O The process is in statistical control.
Transcribed Image Text:a. Determine the ē, 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. p bar Sp UCL LCL b. What comments can you make about the process? The process is out of statistical control. O The process is in statistical control.
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