A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before​ treatment, 14   subjects had a mean wake time of 103.0   min. After​ treatment, the 14   subjects had a mean wake time of 75.4   min and a standard deviation of 24.4   min. Assume that the 14   sample values appear to be from a normally distributed population and construct a 99 ​% 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 103.0   min before the​ treatment? Does the drug appear to be​ effective? Construct the 99 ​% confidence interval estimate of the mean wake time for a population with the treatment.   nothing   minless than muless thannothing   min ​(Round to one decimal place as​ needed.) What does the result suggest about the mean wake time of 103.0   min before the​ treatment? Does the drug appear to be​ effective?   The confidence interval ▼   does not include includes the mean wake time of 103.0   min before the​ treatment, so the means before and after the treatment ▼   could be the same. are different. This result suggests that the drug treatment ▼   has does not have a significant effect.

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