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 79.5 min and a standard deviation of 22.2 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? Construct the 95% confidence interval estimate of the mean wake lime for a population with the treatment min

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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 79.5 min and a
standard deviation of 22.2 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?
Construct the 95% confidence interval estimate of the mean wake lime for a population with the treatment.
min < u<min
(Round to one decimal place as needed)
Transcribed Image Text: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 79.5 min and a standard deviation of 22.2 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? Construct the 95% confidence interval estimate of the mean wake lime for a population with the treatment. min < u<min (Round to one decimal place as needed)
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