c. Prepare a naive forecast for periods 2 through 11 using the given sales data. Compute each of the following: (1) MSE, (2) MAD, (3) tracking signal at month 10, and (4) 2s control limits. How do the naive results compare with the other two forecasts? Month Sales Forecast 1 Forecast 2 1 770 771 769 10 234567899 789 785 787 794 790 792 780 784 798 768 770 774 772 768 770 760 761 759 775 771 775 786 784 788 790 788 788