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...

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 94.4 min and a standard deviation of 24.1 min. Assume that the 22 sample values appear to be from a normally distributed population and construct a 95% 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 95% confidence interval estimate of the mean wake time for a population with the treatment. min <>< min="" (round="" to="" one="" decimal="" place="" as="">