Which of the following systems is typically least suitable for a process layout?

$($a$)$ A hospital

$($b$)$ A car manufacturing plant

$($c$)$ A tool and die manufacturing plant

$($d$)$ A bakery

A company uses exponential smoothing $($with alpha $=0\mathrm{.}2)$ to develop its demand forecasts.

The actual demand in periods $1$ and $2$ turned out to be $7$ and $9,$ respectively. Assume that an

initial forecast of $5$ was used for period $1.$ What is the forecast for period $3?$

$($a$)3\mathrm{.}72$

$($b$)9\mathrm{.}48$

$($c$)5\mathrm{.}00$

$($d$)6\mathrm{.}12$