Forecasting Exercise: (10 Marks) Two independent methods of forecasting based on judgment and experience have been prepared for each month for the past four months. The forecasts and the actual sales are as follows: Month Sales Forecast 1 Forecast 2 1 779 775 773 2 785 783 787 3 791 790 793 4 795 793 794 5 a. Forecast month No 5 in forecast-1, by using a weighted average forecast with weights 5 for the previous month, 0.3 for the month before that, and 0.2 for the last month b. Forecast month No 5 for forecast-2. by using exponential smoothing with a=0.85 c. Given the sales of months 5,6,7 to be (799, 812, 815) compute the above forecasts with the same models (weighted average for F-1 and exponential smoothing for F-2), and then calculate MAD and decide which technique is superior. Hint. Don't forget to calculate month (8) Question: up to which month will you calculate MAD