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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 103.0min. After treatment, the 18 subjects had a mean wake time of 93.2min and a standard deviation of 21.5min. 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?

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 103.0min. After treatment, the 18 subjects had a mean wake time of 93.2min and a standard deviation of 21.5min. 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?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
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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 103.0min. After treatment, the 18 subjects had a mean wake
time of 93.2min and a standard deviation of 21.5min. 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.
min<�<min
(Round to one decimal place as needed.)
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. min<μ< min (Round to one decimal place as needed.)
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. min<μ< min (Round to one decimal place as needed.)
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