Refer to the Baseball 2002 data, which reports information on the 30 Major League Baseball teams for the 2002 season.
At the .05 significance level, can we conclude that there is a difference in the meansalary of teams in the American League versus teams in the National League?
Step by step method for testing the hypothesis under 5 step approach is discussed here. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems.