We want to predict y-salaries for people with the same job title based on x1-months at that job and x2-gender (coded as males-0, females-1) using the model: y=a+BX1+ B2X2 + B3X1 X2 + Identify the following coefficients: alpha- [Select] beta1 [Select] beta2-[Select] beta3 [Select] The baseline group is: males The error term means that: [Select] < [Select] This model: [Select] When looking at the t tests for the coe a quadratic term for months an interaction between males and females a quadratic term for gender an interaction between salary and months a quadratic term for salary an interaction between salary and gender If we think that salary growth would ta females we should add to the equation: [Select] both males and