Problem 3. After plotting demand for four periods, an emergency room manager has concluded that a trend- adjusted exponential smoothing model is appropriate to predict future demand. The initial estimate of trend is based on the net change of 30 for the three periods from 1 to 4, for an average of +10 units. Use a = .5 and B = .4, and TAF of 250 for period 5. Obtain forecasts for periods 6 through 10. Period Actual Period Actual 1 2 3 210 224 229 240 255 6 7 8 9 10 265 272 285 294 4 5