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A clinical trial was conducted to test the effectiveness of a
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A clinical trial was conducted to test the effectiveness of a drug use

A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug. 15 subjects had a mean wake time of and a standard deviation of . Assume that the 15 sample values appear to be from a normally distributed population and construct a confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the treatment is effective? Find the confidence interval estimate (Round to two decimal places as needed.) Does the result indicate whether the treatment is effective?

  1. Yes, the confidence interval indicates that the treatment is effective because the interval contains 0 minutes.
  2. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 0 minutes
  3. No, the confidence interval does not indicate whether the treatment is effective.
  4. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 922 minutes.
  5. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 0 minutes
  6. :Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 922 minutes.
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A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug. 15 subjects had a mean wake time of and a standard deviation of . Assume that the 15 sample values appear to be from a normally distributed population and construct a confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the treatment is effective? Find the confidence interval estimate (Round to two decimal places as needed.) Does the result indicate whether the treatment is effective?
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Question Text
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug. 15 subjects had a mean wake time of and a standard deviation of . Assume that the 15 sample values appear to be from a normally distributed population and construct a confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the treatment is effective? Find the confidence interval estimate (Round to two decimal places as needed.) Does the result indicate whether the treatment is effective?
TopicProbability Concepts
SubjectStatistics
ClassHigh School