A sports reporter suggests that professional baseball players Baseball Football must be, on average, older than professional football players, 28 30 since football is a contact sport. Researchers selected 30 professional football players and 28 professional baseball 27.59 26.57 players at random. The data collected are summarized by 3.97 2.82 the accompanying table. Suppose the researchers decide to test the hypothesis. The degrees of freedom formula gives 48.42 df. Test the null hypothesis at a = 0.05. Let Jy be the mean age of professional baseball players and let J2 be the mean age of professional football players. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H1 - H2 = 0 OB. Ho H1 - H2 = 0 HA : H1 - H20