February 26, 2017

Homework Help: statistics

Posted by Anonymous on Monday, November 7, 2011 at 3:42pm.

a public health investigator wishes to determine whether a new anti-smoking film actually reduces the daily consumption of cigarette by heavy smokers. The mean daily cigarette consumption is calculated consumption for each of eight heavy smokers during the month before the film presentation and also during the month after the film presentation, with the following results: mean daily cigarette

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