Consider this problem: In the 1800s, a man with dwarfism produced a large number of descendents: 22 children, 49 grandchildren, and 250 great-grandchildren, many of whom exhibited dwarfism. In this family, 52 children had normal stature and 40 children had dwarfism when one parent had dwarfism, a dominant trait, while the other parent had normal height.
Which of the following values is closest to the chi-square value for this problem?
1.56
0.69
0.78
1.25
1