Mathematics, 29.06.2019 18:50 hrcatena

Aclinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. after treatment with the drug, 1313 subjects had a mean wake time of 96.996.9 min and a standard deviation of 42.442.4 min. assume that the 1313 sample values appear to be from a normally distributed population and construct a 9595% 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?

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Aclinical trial was conducted to test the effectiveness of a drug used for treating insomnia in olde...