Mathematics, 20.04.2021 21:30, sbhishop19

A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 15 subjects had a mean wake time of 94.3 min and a standard deviation of 44.2 min. Assume that the 15 sample values appear to be from a normally distributed population and construct a 90% 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?

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