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Figure 2 illustrates the power obtained for various sample sizes ( n =7 and 10 per group) as a function of the standardized mean difference by performing a two-tailed two-sample t -test with equal variances and =5%, the standardized mean difference being defined as the absolute difference between the means of the two groups compared divided by their common standard deviation

Financial information published by CBT this April showed major growth

CSPIs litigation department filed the complaint on behalf of the three organizations in the United States District Court for the District of Columbia

Tob Control (2012)

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