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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
The key is to start the trap crop earlier so the plants are bigger and more likely to lure the insects away from the prize crops
They found youths whose favourite stars smoked on screen were far likelier to smoke than their classmates whose favourite actors never smoked, and the more the actor smoked, the more favourably the teen viewed smoking
CSPIs litigation department filed the complaint on behalf of the three organizations in the United States District Court for the District of Columbia
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