The Minitab worksheet (Sophomore Regression.mtw) contains pitching statistics for all rookie pitchers from 2000 and 2001 with over 60 innings pitched. Calculate SO/9IP and WHIP for both the 2000 and 2001 seasons for the pitchers on the list. Assuming that there is no sophomore slump, which pitchers improved in their sophomore seasons, and which players performed worse? Consider ERA, SO/9IP, and WHIP. Use an appropriate hypothesis test see if the rookie class from 2000 has significantly higher performance than the overall major league ability for ERA, WHIP, and SO/9IP. Conduct a similar analysis for the rookie class of 2001.