Question:A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in...
Question
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before treatment, 24
subjects had a mean wake time of 103.0 min. After treatment, the 24
subjects had a mean wake time of 93.6 min and a standard deviation
of 24.1 min. Assume that the 24 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?