A study examines the personal goals of children in grades 4, 5, and 6. A random sample of students was selected for each of the grades 4, 5, and 6 from schools in Georgia. The students received a questionnaire regarding achievement of personal goals. They were asked what they would most like at school: make good grades, be good at sports, or be popular. Results are presented in the following table by the sex of the child.

Boys Girls

Make good grades 192 590

Be popular 64 90

Be good in sports 188 80

Which hypotheses are being tested by the chi-square test?

A) The null hypothesis is that personal goals and sex are independent, and the alternative is that they are dependent.

B) The null hypothesis is that the mean personal goal is the same for boys and girls, and the alternative is that the means differ.

C) The distribution of sex is different for the three different personal goals.

D) The distribution of personal goals is different for boys and girls.