6. Monthly demand at A\&D Electronics for flat-screen TVs are as shown. Estimate demand for the next two months using simple exponential smoothing with =0.3 and Holt's model with =0.05 and =0.1. For the simple exponential smoothing model, use the level at Period 0 to be L0=1,659 (the average demand over the 12 months). For Holt's model, use level at Period 0 to be L0=948 and the trend in Period 0 to be T0=109 (both are obtained through regression). Evaluate the MAD, MAPE, MSE, bias, and TS in each case. Which of the two methods do you prefer? Why? 7. Using the A\&D Electronics data in Exercise 6, repeat Holt's model with =0.5 and =0.5. Compare the performance of Holt's model with =0.05 and =0.1. Which combination of smoothing constants do you prefer? Why