1. What might the regression table have looked like in the study? What would the DV have been? What would the predictor variables have been? Estimate what you think the beta might have been for the predictor, "Math skills at age 7"that is, is it positive or negative? Significant or not?

2.Suppose a critic reads this article and says, "I don't think that it's math skillsI think it's IQ. Smarter people just earn more money and they did better at math as kids, that's all." What should you say in response? In this study, is IQ a potential third variable that could explain the association between math skills and future income?