Currently, the best drug for f

timer Asked: Dec 7th, 2015

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Currently, the best drug for fighting the flu has and average duration of 2.2 days until the flu symptoms are gone. A new drug claims to be better. A group of 100 people, who just acquired the flu, are given this drug. the average duration of the flu for this group was 2.05 days. It is known that the population standard deviation of the sick time for this type of illness is 3 days. At a significance level of 1%, is this drug better, or is the observed data due to chance?

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