Given the following demand data,

$\backslash$table$[[$Period$,$Demand$],[1,61],[2,58],[3,61],[4,57],[5,62]]$

a$.$ Compute a weighted average forecast using a weight of $0\mathrm{.}5$ for the most recent period, $0\mathrm{.}2$ for the next most recent, $0\mathrm{.}2$ for the next, and $0\mathrm{.}1$ for the next. $($Round all your answers to two decimal points.$)$

$\backslash$table$[[$Forecast Period $5,66\mathrm{.}20],[$Forecast Period $6,59\mathrm{.}70]]$