Two independent methods of forecasting based on judgment and experience have been prepared each month for the past 10 months. The forecasts and actual sales are as follows: Month 1 Sales 835 Forecast 1 825 Forecast 2 810 1234567820 840 815 795 790 830 805 805 785 830 775 810 800 840 770 771 785 775 805 855 815 810 9 790 820 840 815 810 840 a. Compute the MSE and MAD for each forecast. (Round your answers to 2 decimal places.) MSE MAD Forecast 1 Forecast 2 b. Compute MAPE for each forecast. (Round your intermediate calculations to 5 decimal places and final answers to 4 decimal places.)