$1.$ Calculate a forecast using a simple $3$ months moving average

$2.$ Calculate the forecast using $3-$period weighted moving average. Use weights of $0\mathrm{.}6,0\mathrm{.}3$ and $0\mathrm{.}1$ for the most recent period, second most recent period and $3$rd most recent period accordingly

$3.$ Calculate the forecast using exponential smoothing method. Assume the forecast per period is $9500$ and alpha is $0\mathrm{.}40$

Identify how many metal plates you are plannig to produce and what is the amount that you will advise your supplier you need in

a$)6$ weeks horizon

b$)6$ months horizon