A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 19 subjects had a mean wake time of 101.0 min. After treatment, the 19 subjects had a mean wake time of 96.6 min and a standard deviation of 20.9 min. Assume that the 19 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

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A clinical trial was conducted to test the effectiveness of a drug for treating insomnia
standard deviation of 20.9 min. Assume that the 19 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?
older subjects. Before treatment, 19 subjects had a mean wake time of 101.0 min. After treatment, the 19 subjects had a mean wake time of 96.6 min and a
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.)
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Transcribed Image Text:7.2.13-T Question Help ▼ A clinical trial was conducted to test the effectiveness of a drug for treating insomnia standard deviation of 20.9 min. Assume that the 19 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? older subjects. Before treatment, 19 subjects had a mean wake time of 101.0 min. After treatment, the 19 subjects had a mean wake time of 96.6 min and a 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.) Enter your answer in the edit fields and then click Check Answer. Check Anwer Clear Al part 1 remaining MacBook Air トI。 888 4 * F5 F7 esc FI F2 23 2$ % & dele 3 4 5 6. 7 Q E R Y tab F G H. A S caps lock く
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