A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22 subjects had a mean wake time of 100.0 min. After treatment, the 22...

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Extracted text: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22 subjects had a mean wake time of 100.0 min. After treatment, the 22 subjects had a mean wake time of 96.7 min and a standard deviation of 24.8 min. Assume that the 22 sample values appear to be from a normally distributed population and construct a 90% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 100.0 min before the treatment? Does the drug appear to be effective? Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment. min <>< min="" (round="" to="" one="" decimal="" place="" as="" needed.)="" what="" does="" the="" result="" suggest="" about="" the="" mean="" wake="" time="" of="" 100.0="" min="" before="" the="" treatment?="" does="" the="" drug="" appear="" to="" be="" effective?="" the="" confidence="" interval="" v="" the="" mean="" wake="" time="" of="" 100.0="" min="" before="" the="" treatment,="" so="" the="" means="" before="" and="" after="" the="" treatment="" a="" significant="" effect.="" this="" result="" suggests="" that="" the="" drug="">