A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 12 subjects had a mean wake time of 94.1 min and a standard deviation of 43.3 min. Assume that the 12 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 treatment iseffective?
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 12 subjects had a mean wake time of 94.1 min and a standard deviation of 43.3 min. Assume that the 12 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 treatment iseffective?
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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A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 12 subjects had a mean wake time of 94.1 min and a standard deviation of 43.3 min. Assume that the 12 sample values appear to be from a
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, 12 subjects had a mean wake
time of 94.1 min and a standard deviation of 43.3 min. Assume that the 12 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 treatment is
effective?
Find the confidence interval estimate.
min <g<
min
(Round to two decimal places as needed.)
Does the result indicate whether the treatment is effective?
O A. No, the confidence interval does not indicate whether the treatment is effective.
O B. Yes, the confidence interval indicates that the treatment is effective because the interval contains 0 minutes.
O C. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 94.1 minutes.
O D. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 94.1 minutes.
O E. Yes, the confidence interval indicates that the treatment is not effective because the interval contains 0 minutes.
O F. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 0 minutes.
O G. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 0 minutes.
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