Three drugs were tested by selecting four groups of volunteers (10 people in each group) and comparing the skilled performance of three groups, each on a dosage of one of the drugs, with that of a control (placebo) group, who had ingested a neutral substance. Source df SS MS F Brand 30 - Error 180 - Total - Complete the partial ANOVA table and give the null and alternative hypotheses to be tested by these data. Assuming all assumptions are reasonable, draw conclusions concerning the aypotheses.

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Q: SS A-treatment .14 B=condition 23.27 7.26 2.2 source AB S AS BS ABS 6.74 DF MS F Fc

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.