Q1. Enrollment in a particular class for the last four semesters had been 120, 126, 110, and 130. Develop a forecast of enrollment next semester using exponential smoothing with an alpha = 0.2. Assume that an initial forecast for the first semester was 120 (so the forecast and the actual were the same).

(a) 118.96

(b) 121.17

(c) 130

(d) 120

(e) none of the above