Using the moving average technique with an n = 3 forecast the demand for quarters 21 through 24 using the values below for weeks 1 through 20.

24

19

18

8

21

24

13

22

12

21

23

15

12

19

21

23

14

19

20

13

(a) with the same values as in the first question, determine the forecast for week 21 using Weighted Moving Average with the weights equal to 50% on the most recent, then 30%, and the third most recent 20%

(b) Using the same values from the problems above, determine the week 21 forecast using linear regression (be sure to re-solve).