4) [30 pts] In class, we analyzed a dataset of preschoolers and fit a linear regression of each child's test score (kid_score) as a function of their mother's IQ (mom_iq, a continuous variable) and whether or not their mother graduated from high school (mom_hs, a binary variable, with "1" indicating graduation from high school. The summary of the fitted model in R is reproduced here: Coefficients: Estimate Std. Error t value Pr(>Itl) (Intercept) 25.73154 5.87521 4.380 1.49e-05 *** mom_hs 5.95012 2. 21181 2. 690 0. 00742 * * mom_iq 0. 56391 0. 06057 9.309