1. The sales of Regiferators at the Walmart stores have grown steadily during the past six years as shown in the table below.

Year	Sales	WMA-3	MA-2	Error^2
1	460	-	-	-
2	495	-	-	-
3	520	-
4	568
5	594
6	605

(a) Provide a forecast by using a 3-year weighted moving average technique with weights 4, 2, and 1 (4 = most recent).

(b) Forecast sales using a 2-year moving average technique.

(c ) What is the MSE from the 2-year moving average?

Round answers to 3 decimal places.