Question

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 weight time of 100.0 min. after treatment, the 14 subjects had a mean wake time of 96.2 min and a standard deviation of 22.6 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 results suggest about the mean wake time of 100.0 min before treatment? does the drug appear to be effective?

Answer 1