A clinical trial was conducted to test the effectiveness of

Last updated: 10/30/2023

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects Before treatment 17 subjects had a mean wake time of 102 0 min After treatment the 17 subjects had a mean wake time of 95 3 min and a standard deviation of 21 8 min Assume that the 17 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 102 0 min before the treatment Does the drug appear to be effective Construct the 95 confidence interval estimate of the mean wake time for a population with the treatment min min Round to one decimal place as needed