please answer 19 only

Question 17 13 points) Suppose that an operations manager is trying to determine what forecasting method to use for the following forecasting problem. Based on the following historical data, calculate the following forecasts and specify which forecasting method you would utilize. Actual Demand Month UAWN 3 4 5 6 35m%2 63 65 68 70 73 75 We can calculate the weighted 3-month forecasts using weights of 0.6, 0.3, and 0.1 for periods 4-6. In particular, the forecast for period 6 is me tert.10:45 Dekheledi Kadirire: Attempt 1 63 0 0 ( M 1 2 3 4 5 6 65 68 70 73 75 We can calculate the weighted 3-month forecasts using weights of 0.6, 0.3, and 0.1 for periods 4-6. In particular, the forecast for period 6 is 66.6 68.9 71.6 71.4 Question 18 (4 points) Saved Refer to the information in Q17. We can calculate the double exponential smoothing forecasts for periods 2-6 using an initial trend forecast (Ti) of 1.8, and initial exponential smoothing forecast (S1) of 60, an a of 0.30 and a B of 0.30. In particular, the forecast for period 3 is In particular, the forecast for period 3 is 64.8480 68.1653 71.2525 74.4708 Question 19 (3 points) Refer to your calculations in Q17 and Q18. ute Deviation (MAD) for the forecasts made by the above Question 19 (3 points) Refer to your calculations in Q17 and Q18. Calculate the Mean Absolute Deviation (MAD) for the forecasts made by the above each technique in periods 5 and 6. Which forecasting method is better in terms of MAD performance measure? weighted 3-month method double exponential smoothing method