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Using the data set below, what would be the forecast for period 5 using a four period weighted moving average? The weights for each period are 0.05, 0.15, 0.30, and 0.50 from the oldest period to the most recent period, respectively. (Choose the closest answer.)

Period

Actual Demand

1

10000

2

12400

3

13250

4

14750

5

15220

6

18500

12820
13105
13710
14610