(e) Use a smoothing constant of a =0,4 to compute the exponential smoothing forecasts. (Use all decimal places as glven in Excel). Does a smoothing constant of 0.2 or 0.4 appear to provide more accurate forecasts based on MSE? Explain. The exponential smoothing using a =0.4 provides a better forecast since it has a smaller MSE than the exponential smoothing using a=0.2 The exponential smoothing using a =0.2 provides a better forecast since it has a larger MSE than the exponential smoothing using The exponential smoothing using a =0.2 provides a better forecast since it has a smaller MSE than the exponential smoothing using =0.4 The exponential smoothing using a=0.4 provides a better forecast since it has a larger MSE than the exponential smoothing using a=0.2