The accompanying data refers to leaf marks found on white clover samples selected from both long-grass areas and short-grass areas (“The Biology of the Leaf Mark Polymorphism in Trifolium repens L.,” Heredity, 1976: 306–325).

Use a x2 test to decide whether the true proportions of different marks are identical for the two types of regions.

df 5 3 0.328 1 0.053 5 6.161 1.400 1 0.228 1 0.014 1 0.002 1 ChiSq 5 3.557 1 0.579 1 a 5 .05