2. In Fragile Families and Child Wellbeing study, a researcher wants to evaluate whether primary caregiver relationship to youth and how much time youth lives with primary caregiver coupled with household income would affect number of days youth absent from school. The following variables are considered: time: how much time youth lives with the primary caregiver. (I =less than half of the time, 0=most of the time) income: primary caregiver household income ( in the unit of thousand dollar) days: number of days youth absent from school. relationshig: primary caregiver relationship to the youth relationship The researcher wants to t a multiple regression model. Assume 5% level of signicance. a. What are the explanatory variables (based on the mentioned research question), and what is the response variable? (4 points) b. Regression analysis output are shown as follows, Analysis of Variance Corrected Total 2041 Parameter Estimates Estimate Std. Error t value Pr(>|tj) Intercept 3.826098 2.151170 1.779 0.0772 time -2 676970 1.056423 2 534 0.0113 income 0.004215 0.005963 0 707 0.4806 r1 1.092612 1.280399 0.853 0.3948 r2 2.253141 1.151844 1.956 0.0522