Do SAT coaching classes work? Do they help students to improve their test scores? In a study, for ten students taking the SAT exam a second time, the improvements in test scores over the first exam were recorded. Five of these students took an SAT coaching class. The other five students did not. Use =0.05. Improvement 2 3 4 5 Coaching class 90 100 30 40 50 No coaching class 10 80 70 20 50 To analyze these data, we should use O two independent sample t test None of these options O paired t test Oz test OF test