Please work on excel. Thanks

6. Using the data in Table 7.10 and Excel's Data Analysis add-in, a. Compute a weighted 3-month moving average forecast of demand through December, using weights of 0.50 (most recent data), 0.30, and 0.20 (most distant data). b. Compute the MAD for the forecast. c. Compute the forecast for the next month (January).\f