What is the explanatory variable

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In a controversial study to determine the effectiveness of AZT, a group of HIV-positive pregnant women were randomly assigned to get either AZT or a placebo. Some of the babies born to these women were HIV-positive, while others were not.

(a) What is the explanatory variable?

(b) What is the response variable?

(c) What are the experimental units?

Reference no: EM131024875

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