A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before​ treatment, 16 subjects had a mean wake time of 103.0 min. After​ treatment, the 16 subjects had a mean wake time of 97.5 min and a standard deviation of 24.3 min. Assume that the 16 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 103.0 min before the​ treatment? Does the drug appear to be​ effective?
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Part 1
Construct the 95​% confidence interval estimate of the mean wake time for a population with the treatment.
  
enter your response here minless thanmuless than
  
enter your response here min
​(Round to one decimal place as​ needed.)