Develop a$$ two$-$period weighted moving average forecast for periods $12$ through $15.$ Use weights of

$0\mathrm{.}80\mathrm{.}8$

and

$0\mathrm{.}20\mathrm{.}2,$

with the most recent observation weighted higher.

$$

Period

Demand

$10$

$228228$

$11$

$328328$

$12$

$469469$

$13$

$321321$

$14$

$476476$

Part $2$

Calculate the forecasts for periods

$12$minus$15$

by using a$$ two$-$period weighted moving average model $($enter your responses rounded to the nearest whole$$ number$).$

Part $3$

Part $4$

Part $5$

Period

Demand

Forecast

$10$

$228228$

$11$

$328328$

$12$

$469469$

enter your response here

$13$

$321321$

enter your response here

$14$

$476476$

enter your response here

$15$

enter your response here