2. You are a manager of Harris Grill with 110 seats. You have tracked the total number of meals served on a weekly basis for the past 20 weeks and the number of meals is as shown in the table below. Week 1 2 3 4 5 6 7 & 9 10 11 12 13 14 15 16 17 18 19 20 Demand 499 538 489 535 547 SII 489 533 SOZ 552 512 530 SIS SO2 499 STI 502 $35 $12 528 . ( points) Forecast demand for week 21 using 5-week simple moving average. Show Me calculations b. (2 points) Forecast demand for week 21 using 3-week weighted moving average by appropriately choosing and assigning weights from 25%65% and 10%. Show your calculations (3 points) If you were to use the exponential smoothing method to forecast demand for week 21. Would you use a high or a low alpha value? Explain why. Explain your answer with supporting material leg.. Generating a graph of data to support your answer) d. (2 points) You decided to use exponential smoothing method to forecast for the week 21 and also decided to use an alpha value of 0.8. Then, how much weight will be placed on the actual demand data from week 20, 19, and 18. respectively. Manually calculate the weights Show we calculations points) Assume that the current period is the end of week 3 and you want to forecast demand for week 4 Manually calculate demand forecast for wock 4 using simple exponential mooling method within alpha value of 0 8. Initialize the method by using actual demand front week las forecast for week 1 Scale