An agricultural biologist wants to find the best type of fertilizer for increasing crop yield for yellow squash. The biologist grows 12 squash plants in a single field and applies three different fertilizers (A, B, and C) to the plants. Then the biologist counted the number of squash fruits that each plant produced, shown in the table below. The tests of normality and equal variances for these data all had P > 0.05. Evaluate whether there were differences in squash yield in the treatment groups, using an a= 0.05. A B C 7 12 16 4 15 18 8 13 15 3 14 13 XA = 5.5 XB = 13.5 Xc = 15.5