Q2 a (3 points) You are interested in estimating the relationship between school-level performance on a fourth-grade math test (% passing) and the percent of single parent households in the zip code. The variable free, measured at the school level, is the percentage of students eligible for the federal free lunch program. The variable medinc is median income in the ZIP code, and potsgle is the percent of students not living with two parents in the ZIP code. Regression A: math4 = 96.77 - 0.833pctsgle n = 299, R= = .380 (15) (1.60) (0.071) Interpret the intercept in Regression A. Is it meaningful here