The demand for a consumer product is fairly constant from week to week. The previous nine weeks of demand is shown below (a t is the actual period’s demand). Use the information to produce a weighted moving average with the following weights: 0.45, 0.35, and 0.20. More recent periods receive a larger weight. Produce a forecast for period 10.
Period a t
1…………………………455
2…………………………410
3…………………………340
4…………………………338
5…………………………433
6…………………………356
7…………………………371
8…………………………363
9…………………………440