Question

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 101.0 min. After​ treatment, the 16 subjects had a mean wake time of 79.7 min and a standard deviation of 23.9 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 101.0 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 ? < muμ < min ?

​(Round to one decimal place as​ needed.)

What does the result suggest about the mean wake time of 101.0 min before the​ treatment? Does the drug appear to be​ effective?The confidence interval ? the mean wake time of 101.0 min before the​ treatment, so the means before and after the treatment ? This result suggests that the drug treatment ? does not have has a significant effect.

Answer 1