A researcher conducts a study in which 90 high school sophomores are randomly assigned to three algebra classes. Class A is taught by a lecture method, class B by a cooperative learning method, and class C by an individualized method. Algebra achievement, the dependent variable, is measured at the end of the course. What statistical significance test is most appropriate for comparing the mean algebra achievement scores of the three groups? If this test yields a value that is significant at the .05 level, how would you interpret this finding?

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The Answer of A researcher conducts a study in which 90 high school sophomores are randomly assigned to three algebra classes. Class A is taught by a lecture method, class B by a cooperative learning method, and class C by an individualized method. Algebra achievement, the dependent variable, is measured at the end of the course. What statistical significance test is most appropriate for comparing the mean algebra achievement scores of the three groups? If this test yields a value that is significant at the .05 level, how would you interpret this finding?

A Researcher Conducts a Study in Which 90 High School