Question $17(4$ points$)$

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The operations manager of a manufacturing firm concerns about the sales performance of a particular product in the near future after looking at the historical data. The yearly sales revenues during the last three$-$year period are provided by the marketing people as follows:

Year

Sales Revenue $($thousand $$)$

$1$

$225\mathrm{.}4$

$2$

$238\mathrm{.}2$

$3$

$241\mathrm{.}6$

What is the forecast for the $4$th year's sales revenue by using linear trend method?

Question $17$ options:

$261\mathrm{.}2354$

$245\mathrm{.}1324$

$251\mathrm{.}2667$

$256\mathrm{.}2354$

Question $18(5$ points$)$

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Refer to the information in Question $17.$

What is the forecast for the $4$th year's sales revenue by using double smoothing method with

$=0\mathrm{.}4$ and

$=0\mathrm{.}2($start with initial estimates S$1=226$ and T$1=10$ for the $1$st year$)?$

Question $18$ options:

$265\mathrm{.}1243$

$255\mathrm{.}1242$

$267\mathrm{.}3023$

$254\mathrm{.}6131$