1. A highway data set contains the number of deaths per million vehicle miles from the year 1945 to 1984 for the entire United States and the state of New Mexico. A Linear regression analysis is conducted. The R output is given below where predictor Year is coded as 1, 2, ... 40 corresponding to year 1945, year 1946, ... year 1984. Code for Where: NM-0, US-1 Call: 1m(formula = Death ~ Year * Where, data = HIGHWAY) Coefficients: Estimate Std. Error t value Pr(>|t/) (Intercept) 13. 15385 0. 25658 51.266