Effectiveness of the drug zopiclone for treating insomnia

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A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia in older subjects. Before treatment with zopiclone, subjects had a mean wake time of 102.8 min. After treatment with zopiclone, the 26 subjects had a mean wake time of 98.9 min and a standard deviation of 12.3 min. Assume that the 26 sample values appear to be from a normally distributed population, and test, at 5%, the claim that after treatment with zopiclone, subjects have a mean wake time of different from 102.8 min. Confirm your results with a confidence interval

Reference no: EM132902707

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