AutoSave . OFF AA ?. CG ... 1q 9 Home Insert Draw Design Layout References Mailings Review View Picture Format Tell me Share Comments Calibri (BO. 12 A A Aa v AaBbCcDdEe AaBbCcDdEe AaBbCcD AaBbCcDdEE AaBb AaBbCcDdEe Normal No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Editor Paste BIU A Pane A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 15 subjects had a mean wake time of 102.0 min. After treatment, the 15 subjects had a mean wake time of 81.9 min and a standard deviation of 22.9 min. Assume that the 15 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 102.0 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