the dean of a business school is forecasting total student enrollment for next year based on the following historical data: year total enrollment 1 1600 2 2000 3 2200 4 2600 5 3000 what is the mse value based on exponential smoothing forecast with smoothing constant of 0.4? group of answer choices 357,985 576 none of the choices 1,557,436 1,297,863