A clinic trial was conducted to test the effectiveness of drug for treating insomnia in older subjects. Before treatment, 25 subjects had a mean wake time of 105.0 min. After treatment, the 25 subjects had a mean wake time of 78.2 min and a standard deviation of 23.6 min. Assume that the 25 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 105.0 min before the treatment? Does the drug appear to be effective?
A clinic trial was conducted to test the effectiveness of drug for treating insomnia in older subjects. Before treatment, 25 subjects had a mean wake time of 105.0 min. After treatment, the 25 subjects had a mean wake time of 78.2 min and a standard deviation of 23.6 min. Assume that the 25 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 105.0 min before the treatment? Does the drug appear to be effective?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 11PT
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A clinic trial was conducted to test the effectiveness of drug for treating insomnia in older subjects. Before treatment, 25 subjects had a
![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.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc18b90ea-cb53-41e6-9532-f9af83d8e951%2Fb3ef9576-4aaf-4dfd-863e-4ab0828a3a6f%2Fs969jbb_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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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