The post-aesthesia care area (recovery room) at Centre Hospital was recently enlarged. The hope was that with the enlargement the mean number of patients per day would be more than 25. A random sample of 15 days revealed the following number of patients X: 23 24 25 26 27 28 29 1 2 3 3 3 1 with EX = 390.
The post-aesthesia care area (recovery room) at Centre Hospital was recently enlarged. The hope was that with the enlargement the mean number of patients per day would be more than 25. A random sample of 15 days revealed the following number of patients X: 23 24 25 26 27 28 29 1 2 3 3 3 1 with EX = 390.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Transcribed Image Text:The post-aesthesia care area (recovery room) at Centre Hospital was
recently enlarged. The hope was that with the enlargement the mean
number of patients per day would be more than 25. A random sample of
15 days revealed the following number of patients X:
23
24
25
26
27
28
29
f
1
2
3
3
3
2
1
with EX = 390.
Assume that the population mean shifts from 24 to 26.5.
Estimate the sample size which is needed for the power of the
test to be 0.9.
(В)
-<)
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