3. Weekly demand figures at Hot Pizza are as shown. They would like to develop a forecasting model using exponential smoothing; however, they do not know what value for alpha would result in the most accurate forecasting model. For the exponential smoothing model, use forecast for F1=106 (the average demand over the 12 months). Use Solver in Excel to determine the optimal value for alpha for each of the following measures of accuracy: MAD, MSE and MAPE. (Hint: Use the "GRG Nonlinear" solving method and start with an alpha value of 0.50.)