Question 3 (20 marks) Apply Holt's Exponential Smoothing Method to forecast demand for Period No. 13 of below dataset with a=0.3 and -0.1. Then, calculate the RMSE based on the given formula by filling in the below table. (Note: Round your calculation to 2 decimal) Period, i 1 2 3 4 5 6 7 8 9 10 11 12 13 D[i] 25 31 42 49 36 41 33 41 41 50 43 56 RMSE = L[t] alpha 0.3 b[t] 0 SSE T-2 beta 0.1 F[t+m] m 1 Error SSE RM SE Error^2