12 Athlete Ages A Sports Reporter Suggests That Professional Baseball Players Must Be On Average Older Than Professio 1 (47.71 KiB) Viewed 34 times
12 Athlete Ages A Sports Reporter Suggests That Professional Baseball Players Must Be On Average Older Than Professio 2 (21.81 KiB) Viewed 34 times
12. Athlete ages A sports reporter suggests that professional baseball players must be, on average, older than professional football players, since football is a contact sport and players are more susceptible to concussions and serious injuries. Using data from sports.yahoo.com, one player was selected at random from each team in both professional baseball (MLB) and professional football (NFL). The data are summarized below. MLB NFL n 30 y 27.5 S 3.94 32 26.16 2.78 S
16. Athlete ages, ninth inning The researchers in Exercise 12 decide to test the hypothesis. The degrees of freedom formula gives 51.83 df. Test the null hypothesis at a = 0.05. Is the alternative one- or two-sided?
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