Question 3 [10 marks]: You fit a purely seasonal model for a monthly series on employee hours using a full set of monthly dummy variables. Discuss how the estimated dummies h, . ... would change if you changed the first dummy variable Di = (1,0,0, ..) (with all the other dummies staying the same) to 51710 a) Di = (2.0,0,...) U) Di = {-10,0....}