Rita teaches environmental biology. She has 2 forms of a midterm exam, and she wonders if either form is harder than the other. She teaches approximately 200 total students in 4 sections of the class.

Rita teaches environmental biology. She has 2 forms of a midterm exam, and she wonders if either form is

harder than the other. She teaches approximately 200 total students in 4 sections of the class. She
randomly assigns half of the students in each section to each form of the exam. Rita will then see if the
average scores are significantly different between each form.
What type of experiment design is this?

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