b) Using first the simple regression model we presented in class compute the premium for having obtained a bachelor degree for this cohort as of their 1999 jobs. What about if you use the 1998 income? (Hint: Remember to use the logarithmic transformation discussed in class to get the premium in percentage terms) c) How is this premium affected when you run a multiple regression model where you take into account variables like gender, race, and marital status? What about the effect of having dependents? And owning a house? Interpret the values of the other coefficients in the multiple regression model