(Solved): Consider the following sample regressions for the linear and quadratic models along with their resp ...

Consider the following sample regressions for the linear and quadratic models along with their respective $R^2$ and adjusted $R^2$. (25pts) a. Use the appropriate goodness-of-fit measure to justify which model fits the data better. Linear model or Quadratic model b. Given the best-fitting model, predict $y$ for $x=4,8$, and 12 Q4 Consider the following sample regressions for the log-log and the exponential models. (25pts) a. Justify which model fits the data better. b. Use the selected model to predict $y$ for $x=20$.