After the school instituted a new aerobics program, data was gathered in a follow-up survey administered in all the grades. The collected information is shown in Table 8-6.

Imagine you are the editor of the journal in which an article was submitted for review using a chi-square test to determine whether boys or girls are more likely to participate in sports. After reading it, you realize that the male and female subjects were recruited as brother and sister pairs. What would you conclude about the analysis?

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TABLE 8-6 No sports Sports participation Total Gender and Sports Participation after New Aerobics Program Chi-square= 25, p<0.0001. Male 60 140 200 Female 20 180 200 Total 80 320 400