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 105.0 min. After treatment, the 17 subjects had a mean wake time of 100.3 min and a standard deviation of 20.6 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 105.0 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

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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 105.0
min. After treatment, the 17 subjects had a mean wake time of 100.3 min and a standard deviation of 20.6 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 105.0 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 < u< min
(Round to one decimal place as needed.)
What does the result suggest about the mean wake time of 105.0 min before the treatment? Does the drug appear to be effective?
The confidence interval
V the mean wake time of 105.0 min before the treatment, so the means before and after the treatment
This result suggests that the drug treatment
a significant effect.
are different.
could be the same.
Transcribed Image Text: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 105.0 min. After treatment, the 17 subjects had a mean wake time of 100.3 min and a standard deviation of 20.6 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 105.0 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 < u< min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 105.0 min before the treatment? Does the drug appear to be effective? The confidence interval V the mean wake time of 105.0 min before the treatment, so the means before and after the treatment This result suggests that the drug treatment a significant effect. are different. could be the same.
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 105.0
min. After treatment, the 17 subjects had a mean wake time of 100.3 min and a standard deviation of 20.6 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 105.0 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 <u<min
(Round to one decimal place as needed.)
What does the result suggest about the mean wake time of 105.0 min before the treatment? Does the drug appear to be effective?
The confidence interval
the mean wake time of 105.0 min before the treatment, so the means before and after the treatment
This result suggests that the drug treatment
V a significant effect.
has
does not have
Transcribed Image Text: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 105.0 min. After treatment, the 17 subjects had a mean wake time of 100.3 min and a standard deviation of 20.6 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 105.0 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 <u<min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 105.0 min before the treatment? Does the drug appear to be effective? The confidence interval the mean wake time of 105.0 min before the treatment, so the means before and after the treatment This result suggests that the drug treatment V a significant effect. has does not have
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