28. A sample of 81 people has a mean of 100 and a standard deviation of 36. Calculate the t-statistic for the hypothesis: / = 0. (A) 22.5 (B) 25 (C) 33.3 (D) 66.7 (E) 40 I = 50 SJ = 5 n = 100 Ho : p = 30 29. What is the t-statistic? (A) 5 (B) 10 (C) 20 (D) 40 (E) 80 30. Is this a one-tailed or two-tailed test? (A) one-tailed (B) two-tailed 32. Kaiser Fung suggests in the chapter "Timid Testers / Magic Lassos" in Numbers Rule Your World that drug testing in professional sports generates nearly ten times as many: (A) false negatives as true positives (B) false positives as false negatives (C) false positvess as true negatives (D) none of the above