Coors Field is home to the Colorado Rockies baseball team and is located in Denver, Colorado. Denver is approximately one mile above sea level, and the air there is “thinner.” Therefore, baseballs are thought to travel farther in this stadium. Does the evidence support this belief? In 2018, the mean distance of all home runs hit was 397.6 feet. The following data represent the distance, in feet, of a random sample of 12 home runs hit in Coors Field. Does this represent evidence to suggest that the ball travels farther in Coors Field than it does in the other Major League ballparks?

(a) Draw a boxplot of the data. Does the boxplot suggest that it is appropriate to use Student’s t-distribution to determine the P-value?
(b) Does the sample data suggest that the ball travels farther in Coors Field than it does in the other Major League ballparks? Use the α = 0.05 level of significance.

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