A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 15 subjects had a mean wake time of 100.0 min. After treatment, the 15 subjects had a mean wake time of 95.5 min and a standard deviation of 21.8 min. Assume that the 15 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 100.0 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< mean< _____ min (Round to one decimal place as needed.) What does.the result suggest about the mean wake time of 100.0 min before treatment? Does the drug appear to be effective? The confidence interval ______ theean wake time of 100.0 min before treatment, so the means before and after the treatment _________. This result suggests that the drug treatment _______ an effect.
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 15 subjects had a
Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment.
______min< mean< _____ min
(Round to one decimal place as needed.)
What does.the result suggest about the mean wake time of 100.0 min before treatment? Does the drug appear to be effective?
The confidence interval ______ theean wake time of 100.0 min before treatment, so the means before and after the treatment _________. This result suggests that the drug treatment _______ an effect.
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