Question: Using the summary statistics provided in Exercise 12, the sports reporter calculated the following 95% confidence interval for the mean difference between major league baseball

Using the summary statistics provided in Exercise 12, the sports reporter calculated the following 95% confidence interval for the mean difference between major league baseball players and professional football players. The 95% interval for μ_MLB – μ_NFL was (–0.41, 3.09). Summarize in context what the interval means.

Data From Exercise 12

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.

y S MLB 30 27.5 3.94 NFL 32 26.16 2.78

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