Suppose that you obtain a new software package and want to verify that you are correctly using its regression command. You know that in your data set the average number of days that low birthweight newborns stay in the hospital

(NUMDAYS) is 15 for white babies and 30 for Latino babies. Write the prediction equations (including the intercept and slope) that you should obtain from the software package if you estimated separately each of the two following bivariate regression models:

(a) regress NUMDAYS on a dummy variable WHITE , coded “1” for white babies and “0” for Latino babies.

(b) regress NUMDAYS on a dummy variable LATINO , coded “1” for Latino babies and “0” for white babies.