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Question

ory Bookmarks People Window Help ebranation.com/estyourselfalgebra/index/2732 Researchers are interested in the best way to prepare for an Algebra 2 exam. One hundred students will be randomly assigned to use one of the folowing four treatments Review class notes Treatment 1 Review class notes and attend a review course Treatment 2 Review class notes and study using the Math Nation Resources Treatment 3 Review notes, attend a review and study using the Math Nation Resources Treatment 4 suppose you design an experiment and randomly choose 100 students using a random number generator. Then, you randomly assign treatments to each subject. Your teacher suggests that gender is a potential lurking/confounding variable. How could the experiment be modified to control for gender?

Explanation / Answer

The answer would be A. We will first randomly select all the 100 students. There is no bias here. Since gender is a potential lurking variable, so the treatment will be different in both males and females as we dont want to compromise by randomly assigning treatments to all. Hence, we will first separate them into male and female and then randomly assign them treatments.

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