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A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 14 subjects had a mean wake time of 102.0 min. After treatment, the 14 subjects had a mean wake time of 97.1 min and a standard deviation of 21.3 min. Assume that the 14 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 102.0 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

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 14 subjects had a mean wake time of 102.0 min. After treatment, the 14 subjects had a mean wake time of 97.1 min and a standard deviation of 21.3 min. Assume that the 14 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 102.0 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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 14 subjects had a mean wake time of 102.0 min. After treatment, the 14 subjects had a mean wake time of 97.1 min and a standard deviation of 21.3 min. Assume that the 14 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 102.0 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< (Round to one decimal place as needed.) min What does the result suggest about the mean wake time of 102.0 min before the treatment? Does the drug appear to be effective? The confidence interval the mean wake time of 102.0 min before the treatment, so the means before and after the treatment This result suggests that the drug treatment V an effect.
Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 14 subjects had a mean wake time of 102.0 min. After treatment, the 14 subjects had a mean wake time of 97.1 min and a standard deviation of 21.3 min. Assume that the 14 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 102.0 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< (Round to one decimal place as needed.) min What does the result suggest about the mean wake time of 102.0 min before the treatment? Does the drug appear to be effective? The confidence interval the mean wake time of 102.0 min before the treatment, so the means before and after the treatment This result suggests that the drug treatment V an effect.
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