$1.(*)$ Develop a three$-$period moving average forecast for

periods $1315.$

$2.(*)$ Develop a two$-$period weighted moving average forecast for periods $12$ through $15.$ Use weights of $0\mathrm{.}7$ and $0\mathrm{.}3,$

with the most recent observation weighted higher.

$3.(*)$ Develop an exponential smoothing forecast

$($a $=0\mathrm{.}25)$ for periods $11$ through $15.$ Assume that your

forecast for period $10$ was $252$