A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia and older subjects. After treatment with the drug, 23 subjects had a mean wake time at 95.5 minutes and a standard deviation of 44.7 minutes. Assume that the 23 sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the standard deviation of the week times for a population with the drug treatment. Does the results indicate whether the treatment is effective? Question Help ▼A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 23 subjects had a mean waketime of 95.5 min and a standard deviation of 44.7 min. Assume that the 23 sample values appear to be from a normally distributed population and construct a 98%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?Find the confidence interval estimate.

Answered: Find the confidence interval estimate.…

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 and older subjects. After treatment with the drug, 23 subjects had a mean wake time at 95.5 minutes and a standard deviation of 44.7 minutes. Assume that the 23 sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the standard deviation of the week times for a population with the drug treatment. Does the results indicate whether the treatment is effective?

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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, 23 subjects had a mean wake
time of 95.5 min and a standard deviation of 44.7 min. Assume that the 23 sample values appear to be from a normally distributed population and construct a 98%
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.
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min <o<
(Round to two decimal places as needed.)
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