A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean wake time of 97.3 min and a standard deviation of 44.2 min. Assume that the 17 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the се treatment is effective? Find the confidence interval estimate. min
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean wake time of 97.3 min and a standard deviation of 44.2 min. Assume that the 17 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the се treatment is effective? Find the confidence interval estimate. min
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean
wake time of 97.3 min and a standard deviation of 44.2 min. Assume that the 17 sample values appear to be from a normally distributed population and construct
a 95% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the
се
treatment is effective?
Find the confidence interval estimate.
min <o<
min
(Round to two decimal places as needed.)
purces
Does the result indicate whether the treatment is effective?
ons
A. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 97.3 minutes.
B. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 97.3 minutes.
on Tools
O C. Yes, the confidence interval indicates that the treatment is not effective because the interval contains 0 minutes.
D. Yes, the confidence interval indicates that the treatment is ffective because the interval contains 0 minutes.
O E. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 0 minutes.
O F. No, the confidence interval does not indicate whether the treatment is effective.
G. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 0 minutes.
ООО О ОС
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Step 1
Given that, A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean wake time of 97.3 min and a standard deviation of 44.2 min. Assume that the 17 sample values appear to be from a normally distributed population.
We need to construct a 95% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. And Does the result indicate whether the treatment is effective?
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