$1.(*)$ Develop a three$-$period moving average forecast for periods $13-15.$

$2.(*)$ 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 $\backslash ((\backslash$alpha$=0\mathrm{.}25)\backslash )$ for periods $11$ through $15.$ Assume that your forecast for period $10$ was $252.$