The management of Regional Hospital has made substantial improvements in their hospital and would like to test and determine whether there has been a significant decrease in the average length of stay of their patients in their hospital. The following data has been accumulated before and after the improvements. At the 5% level, test to determine if there has been a significant reduction in the average length of stay.
The management of Regional Hospital has made substantial improvements in their hospital and would like to test and determine whether there has been a significant decrease in the average length of stay of their patients in their hospital. The following data has been accumulated before and after the improvements. At the 5% level, test to determine if there has been a significant reduction in the average length of stay.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The management of Regional Hospital has made substantial improvements in their hospital and would like to test and
determine whether there has been a significant decrease in the average length of stay of their patients in their hospital.
The following data has been accumulated before and after the improvements. At the 5% level, test to determine if there
has been a significant reduction in the average length of stay.
After
Before
Sample size
45
56
Mean (in days)
4.6
4.9
Standard Deviation (o)
.5
.55
a. Formulate the hypotheses.
b. Compute the test statistic.
Using the p-value approach, test to see if there has been a significant reduction in the average
C.
length of stay. Let a = .05.
d. What does the test result mean in the context of this problem?
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