A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before​ treatment, 20 subjects had a mean wake time of 102.0 min. After​ treatment, the 20 subjects had a mean wake time of 96.6 min and a standard deviation of 22.6 min. Assume that the 20 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<μ

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 104.0 min. After treatment, the 24 subjects had a mean wake time of 98.2 min and a standard deviation of 23.3 min. Assume that the 24 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 104.0 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 < µ< min (Round to one decimal place as needed.) Enter your answer in the edit fields and then click Check Answer. ? 1 part remaining Clear All Check Answer

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 101.0 min. After​ treatment, the 17 subjects had a mean wake time of 96.8 min and a standard deviation of 21.1 min. Assume that the 17 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 101.0 min before the​ treatment? Does the drug appear to be​ effective? Construct the 90​% confidence interval estimate of the mean wake time for a population with the treatment.   ____min<μ<____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   does not include includes the mean wake time of…

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before​ treatment, 18 subjects had a mean wake time of 103.0 min. After​ treatment, the 18 subjects had a mean wake time of 93.2 min and a standard deviation of 21.5 min. Assume that the 18 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? Construct the 99​% confidence interval estimate of the mean wake time for a population with the treatment.