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D Solvn 3. The performance of 9 students on a spelling test was noted before and after viewing a computerized teaching method to improve spelling. The number of spelling mistakes before and after viewing the new method are listed in the table below. Can it be determined at a = 0.05, that the new method helped in reducing spelling mistakes? Student 2 4 5 7 8 9 Before 8 5 2 0 7 6 After 6 4 W 0 6 5 6