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17) Nine students took the SAT. Their scores are listed below. Later on, they read a book on test preparation and retook the SAT. Their new scores are listed below. Test the claim that the book had no effect on their scores. Use a = 0.05. Assume that the distribution is normally distributed. (151m) Student 1 260 3 4 5 6 7 8 9 Scores before readin book 720 850 880 860 710 850 1200 950 Scores after readin book 890 720 340 1240 970