17. Baseball 2006. American League baseball teams

Chapter 24, Problem 17

(choose chapter or problem)

17. Baseball 2006. American League baseball teams playtheir games with the designated hitter rule, meaning thatpitchers do not bat. The league believes that replacing thepitcher, traditionally a weak hitter, with another player inthe batting order produces more runs and generates moreinterest among fans. Below are the average numbers ofruns scored in American League and National Leaguestadiums for the 2006 season. a) Create an appropriate display of these data. What doyou see?b) With a 95% confidence interval, estimate the meannumber of runs scored in American League games.c) Coors Field, in Denver, stands a mile above sea level,an altitude far greater than that of any other NationalLeague ball park. Some believe that the thinner air makesit harder for pitchers to throw curve balls and easier for batters to hit the ball a long way. Do you think the 10.5runs scored per game at Coors is unusual? Explain.d) Explain why you should not use two separate confidenceintervals to decide whether the two leaguesdiffer in average number of runs scored.