A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 25 subjects had a mean wake time of 103.0 min. After treatment, the 25 subjects had a mean wake time of 82.9 min and a standard deviation of 20.3 min. Assume that the 25 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 103.0, 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.
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(Round to one decimal place as needed.)
What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear to be effective?
The confidence interval DOES NOT/DOES the mean wake time of 103.0 min before the treatment, so the means before and after the treatment COULD BE THE SAME/ARE DIFFERENT
This result suggests that the drug treatment DOES NOT HAVE/HAS A SIGNIFICANT EFFECT.
The confidence interval does not include the mean wake time 103 min before the treatment so the means before and after the treatment are different. This result suggests that the drug treatment has a significant effect.
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
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