use trend$-$adjusted smoothing with $\backslash$alpha $=0\mathrm{.}3$ and $\backslash$beta $=0\mathrm{.}2$ to smooth the new account data in part a$.$ What is the forecast for period $16?$ Compute the initial trend estimate $($Tt$)$ for Period $5$ as follows: $($Period $4$ data $$ Period $1$ data$)/3.$ Then compute the initial trend$-$adjusted forecast $($TAFt$)$ for Period $5$ as follows: Period $4$ data $+$ Initial trend estimate for Period $5.$