A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 18 subjects had a mean wake time of 103.0 min. After treatment, the 18 subjects had a mean w ime of 93.2 min and a standard deviation of 21.5 min. Assume that the 18 sample values appear to be from a nor distributed population and construct a 99% confidence interval estimate of the mean wake time for a population wi drug treatments. What does the result suggest about the mean wake time of 103.0 min before the treatment? Doe drug appear to be effective? Construct the 99% confidence interval estimate of the mean wake time for a population with the treatment. 78.5 min<µ< 107.9 min Round to one decimal place as needed.) What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear De effective? 400 a
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 18 subjects had a mean wake time of 103.0 min. After treatment, the 18 subjects had a mean w ime of 93.2 min and a standard deviation of 21.5 min. Assume that the 18 sample values appear to be from a nor distributed population and construct a 99% confidence interval estimate of the mean wake time for a population wi drug treatments. What does the result suggest about the mean wake time of 103.0 min before the treatment? Doe drug appear to be effective? Construct the 99% confidence interval estimate of the mean wake time for a population with the treatment. 78.5 min<µ< 107.9 min Round to one decimal place as needed.) What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear De effective? 400 a
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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Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects.
Before treatment, 18 subjects had a mean wake time of 103.0 min. After treatment, the 18 subjects had a mean wake
time of 93.2 min and a standard deviation of 21.5 min. Assume that the 18 sample values appear to be from a normally
distributed population and construct a 99% 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 103.0 min before the treatment? Does the
drug appear to be effective?
Construct the 99% confidence interval estimate of the mean wake time for a population with the treatment.
78.5 min<μ< 107.9 min
(Round to one decimal place as needed.)
What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear to
be effective?
The confidence interval
and after the treatment
the mean wake time of 103.0 min before the treatment, so the means before
This result suggests that the drug treatment
an effect.
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