Construct the confidence interval estimate of mean wake time

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Problem: 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 104.0 min. After? treatment, the 15 subjects had a mean wake time of 83.9 min and a standard deviation of 23.5 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 104.0 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.

Reference no: EM132488392

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