Question: A researcher suspects there are differences in reading problems as a function of gender among first-grade children. A random sample of 100 first-graders is selected- 50 boys and 50-girls. Of the boys, 25 are found to have reading problems and 25 are found to have no reading problems. Of the girls, 10 are found to have reading problems and 40 to have no reading problems. The contingency table is as follows:

Reading Problems No Reading Problems

Boys a 25 b 25 50

Girls c 10 d 40 50

35 65 100

Test the hypothesis.