Question: 11.14. Table 11.15 comes from a regression analysis of y = number of children in family, x = mother's educational level in years (MEDUC), and

11.14. Table 11.15 comes from a regression analysis of y = number of children in family, x\ = mother's educational level in years (MEDUC), and X2 =

father's socioeconomic status (FSES), for a random sample of 49 college students at Texas A&M University.

(a) Write the prediction equation. Interpret parameter estimates.

(b) Report SSE. Use it to explain the least squares property of this prediction equation.

(c) Explain why it is not possible that ryXx .X2 =

0.40.

(d) Can you tell from the table whether ryXx is positive or negative? Explain.

TABLE 11.15 Sum of Squares Regression 31.8 Residual 199.3 b

(Constant) 5.25 MEDUC -0.24 FSES 0.02

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