Question: a statistce instructor thinks that doing homework improves scores on statitsc exams. to test this hypothesis , she randomly assings students to two groups. one

a statistce instructor thinks that doing homework improves scores on statitsc exams. to test this hypothesis , she randomly assings students to two groups. one group is required to work on the homework , until all problems are correct, while homework is optional for the second group as it is has alwyas been (control group). At the end of the semster, exam gradesare compared between the tweo groups. what is the indepnedt and dependent variable

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