A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia...

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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, 29 subjects had a mean wake time of 92.9 min and a standard deviation of 41.5 min. Assume that the 29 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. O min <a<Omin (Round to two decimal places as needed.) A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 29 subjects had a mean wake time of 92.9 min and a standard deviation of 41.5 min. Assume that the 29 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. O min <a<Omin (Round to two decimal places as needed.)

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Solution Given that n 29 929 3D S 415 95 confid... View the full answer