Education and child psychology experts claim that the medication given to children diagnosed with Attention Deficit Hyperactivity Disorder (ADHD) improves academic performance. But many parent organizations, worried about giving young children drugs that can have adverse side-effects, claim that teachers show favoritism toward ADHD children who take medication over ADHD children who do not take medication. To investigate this claim the teachers of 75 ADHD children were told that the children were receiving medication, but the children were actually given a sugar pill. The same teachers were told that 50 different ADHD children were not taking any medication. Grades given to the ADHD students taking m 1% had mean )71 = 85 and standard deviation s1 = 7; grades given to the ADHD children not taking any medication had mean )_(2 = 79 and standard deviation 52 = 5. A 99% confidence interval for the difference in mean grades between ADHD students taking sugar pills and ADHD students not taking any medication is: (use 49 for the degrees of freedom; you can use this ttable). , 72 52 \" -7 i 2. (85 9) 6800 75 50 , 72 52 (85-79)i2.6800 75+ E 2 2 7_+5_ ' (85-79) i 2.0096 75 50 \\ L+i (85-79)i2.6800 75 50 7 5 \" (85-79) i 2.0096( ) WE'VE