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Mathematics, 16.12.2019 10:31 Fireburntbudder
Aclinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. before treatment, 13 subjects had a mean wake time of 102.0 min. after treatment, the 13 subjects had a mean wake time of 79.4 min and a standard deviation of 21.2 min. assume that the 13 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?
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