Refer to the Baseball 2019 data, which report information on the 30 Major League Baseball teams for the 2019 season.

At the .10 significance level, is there a difference in the variation in team salary among the American and National League teams? Create a variable that classifies a team’s total attendance into three groups: less than 2.0 (million), 2.0 up to 3.0, and 3.0 or more. At the .05 significance level, is there a difference in the mean number of games won among the three groups? Using the same attendance variable developed in part (b), is there a difference in the mean number of home runs hit per team? Use the .05 significance level. Using the same attendance variable developed in part (b), is there a difference in the mean salary of the three groups? Use the .05 significance level.

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Team Arizona Diamondbacks Atlanta Braves Baltimore Orioles Boston Red Sox Chicago Cubs Chicago White Sox Cincinnati Reds Cleveland Indians Colorado Rockies Detroit Tigers Houston Astros Kansas City Royals Los Angeles Angels Los Angeles Dodgers Miami Marlins Milwaukee Brewers Minnesota Twins New York Mets New York Yankees Oakland Athletics Philadelphia Phillies Pittsburgh Pirates San Diego Padres San Francisco Giants Seattle Mariners St. Louis Cardinals Tampa Bay Rays Texas Rangers Toronto Blue Jays Washington Nationals League National National American American National American National American National American American American American National National National American National American American National National National National American National American American American National Year Opened 1998 2017 1992 1912 1914 1991 2003 1994 1995 2000 2000 1973 1966 1962 2012 2001 2010 2009 2009 1966 2004 2001 2004 2000 1999 2006 1990 1994 1989 2008 Team Salary 96.78 89.55 61.12 187.23 194.08 83.76 106.44 88.71 125.19 97.99 147.62 67.94 132.18 99.80 69.57 108.40 101.06 91.58 118.83 84.35 131.15 54.58 63.07 157.27 116.38 125.37 49.08 104.35 54.57 154.18 Attendance Wins ERA 85 4.25 4.19 97 54 84 4.70 84 4.10 21,35,510 26,55,100 13,07,807 29,24,627 30,94,865 16,49,775 18,08,685 27,27,421 14,91,439 17,38,642 59 5.20 29,93,244 15,01,430 47 28,57,367 107 14,79,659 30,19,012 72 5.12 39,74,309 106 3.37 8,11,302 57 4.74 89 4.40 29,23,333 22,94,152 24,42,532 33,04,404 16,62,211 23,96,399 27,07,760 17,91,863 34,80,393 11,78,735 21,32,994 17,50,144 22,59,781 BA 0.252 0.258 HR 220 249 5.59 0.246 213 0.269 245 0.252 256 0.261 182 0.244 227 0.250 223 224 72 4.90 75 93 4.18 3.76 71 5.56 0.265 5.24 0.240 3.66 0.274 149 288 0.247 162 0.247 220 0.257 279 0.241 146 0.246 250 101 86 103 4.31 0.267 97 3.97 0.249 81 4.53 0.246 69 5.18 0.265 4.18 0.270 307 4.24 0.257 242 306 257 215 163 70 0.238 219 4.60 4.38 68 4.99 77 0.239 167 0.237 239 0.245 210 91 3.80 96 3.65 0.254 217 78 5.06 67 4.79 93 4.27 0.265 231 0.248 223 0.236 247 Net Worth 1.29 1.70 1.28 3.20 3.10 1.60 1.05 1.15 1.23 1.25 1.78 1.03 1.90 3.30 1.00 1.18 1.20 2.30 5.60 1.10 1.85 1.28 1.35 3.00 1.58 2.10 1.01 1.65 1.50 1.75