Based on the following data, complete empty cells of the table by using Exponential Smoothing method. Then, Forecast the value of Month 9 and compute the MSE index (a=0.2 and consider the forecast of first month equal to 26). Month Forecast Real observations MSE Forecast error Squared forecast error 1 30 3 40 27 32 19 4 5 N F = F-1 + a(4-1-F-1) MSE 72