Just wondering if my answers are correct,

1. In the American [baseball] League, the pitcher, who is generally a poor hitter, does not bat. Instead, a Designated Hitter [DH], generally a much better hitter, bats in the pitcher's place. The Office of the Commissioner of Baseball states that scoring is different in the two leagues. A sample of 30 games reveals the following: xbarAL = 6.0, with SAL = 3.5 & xbar'NL = 4.7, with SAL = 2.6. Test their claim at a = .05. (a) Ho: (b) Reject H . when t is outside (c) (d) Ho is (e) 2. Tylenol's maker is researching the premise that aspirin, because it is a vasodialator, changes blood clotting time compared to Tylenol. Mean clotting time is measured in 12 patients with results shown in the table. Test their research premise at a 98% LC. seconds Xbar Asprin 11.9 1.1 (a) Ho: Tylenol 10.8 0.7 (b) Reject H. when t is outside (C) t = (d) Ho is (e) 3. Step pulse research is underway where 30 subjects of each sex have their pulse measured after stepping up onto a 6 inch step, then down for 3 minutes. The research hypothesis of the test is that men's mean step pulse will be different from that of women. Predict the outcome at a =.05. (a) Ho: Xbar S (b) Reject H . when Men 112 11.3 (C) t = Women 118 14.2 (d) Ho is (e)