A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22 subjects had a mean wake time of 104.0 min. After treatment, the 22 subjects had a mean wake time of 98.7 min and a standard deviation of 20.9 min. Assume that the 22 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear to be effective? Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment. min<< min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear to be effective? The confidence interval before and after the treatment the mean wake time of 104.0 min before the treatment, so the means This result suggests that the drug treatment
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22 subjects had a mean wake time of 104.0 min. After treatment, the 22 subjects had a mean wake time of 98.7 min and a standard deviation of 20.9 min. Assume that the 22 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear to be effective? Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment. min<< min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear to be effective? The confidence interval before and after the treatment the mean wake time of 104.0 min before the treatment, so the means This result suggests that the drug treatment
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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![A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before
treatment, 22 subjects had a mean wake time of 104.0 min. After treatment, the 22 subjects had a mean wake time of
98.7 min and a standard deviation of 20.9 min. Assume that the 22 sample values appear to be from a normally
distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with
drug treatments. What does the result suggest about the mean wake time of 104.0 min before the treatment? Does
the drug appear to be effective?
Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment.
min<<min
(Round to one decimal place as needed.)
What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear
to be effective?
The confidence interval
before and after the treatment
8
ight © 2022 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy Permissions Contact Us
T
G
B
?
6
Y
H
&
7
N
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hp
U
J
the mean wake time of 104.0 min before the treatment, so the means
This result suggests that the drug treatment
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8/7/2022
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Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before
treatment, 22 subjects had a mean wake time of 104.0 min. After treatment, the 22 subjects had a mean wake time of
98.7 min and a standard deviation of 20.9 min. Assume that the 22 sample values appear to be from a normally
distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with
drug treatments. What does the result suggest about the mean wake time of 104.0 min before the treatment? Does
the drug appear to be effective?
Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment.
min<<min
(Round to one decimal place as needed.)
What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear
to be effective?
The confidence interval
before and after the treatment
8
ight © 2022 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy Permissions Contact Us
T
G
B
?
6
Y
H
&
7
N
a
hp
U
J
the mean wake time of 104.0 min before the treatment, so the means
This result suggests that the drug treatment
4+
8
M
9
K
f10 11
)
O
L
?
89°F
f12
✈
?
+
{
P [
Next
=
JUD40)
insert
}
]
pause
2:59 PM
8/7/2022
prt sc.
backspace
delete
home
enter
pg up
T shift
pg
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