One of the characters Mendel studied was the position of the flowers. He crossed plants

that had flowers at the tips of the stems with plants that had flowers along the sides. He
allowed the F1 plants, which had flowers along the sides, to self-fertilize. In the F2
generation, he counted 651 plants with stems on the sides and 207 with stems at the tips.
a. What is the chi-square value under the null hypothesis of 3:1 segregation?