Mathematics, 16.07.2020 01:01, tagerryawilson6
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 2727 subjects had a mean wake time of 94.794.7 min and a standard deviation of 43.643.6 min. Assume that the 2727 sample values appear to be from a normally distributed population and construct a 9898% 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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