Four sororities took a random sample of sisters regarding their grade means for the past term. The results are shown below: MEAN GRADES FOR FOUR SORORITIES Sorority 1    Sorority 2         Sorority 3     Sorority 4 2.17                 2.63                 2.63             3.79 1.85                 1.77                 3.78             3.45 2.83                  3.25                4.00             3.08 1.69                  1.86                2.55             2.26 3.33                  2.21                2.45             3.18 Calculate the test statistic: F Group of answer choices

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