25. SAT Training Course The article “An SAT Coaching Program That Works” (by Kaplan, Chance, Vol. 15, No. 1) included a graph similar to the one shown below. The points represent the SAT scores of 9 subjects before and after taking an SAT preparation course. For each subject, identify the before and after SAT scores, then test the claim that the preparatory course is effective in raising SAT scores.

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