clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Beforetreatment, 14 subjects had a mean wake time of 102.0 min. Aftertreatment, the 14 subjects had a mean wake time of 97.8 min and a standard deviation of 24.9 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 result suggest about the mean wake time of 102.0

min before thetreatment? Does the drug appear to beeffective?