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 105.0 min . After treatment, the 14 subjects had a mean wake time of 100.6 min and a standard deviation of 21.1 min . Assume that the 14 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 1050 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.
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min \( <\mu< \) min
(Round to one decimal place as needed.)