$20\mathrm{.}13$

$20\mathrm{.}13$ b: need to construct the decision tree. Without it$,$ points will be deducted even if the final conclusion is correct.

$13.$ Buying Decision for a Seasonal Product. Lawson's Department Store faces a buying decision for a seasonal product for which demand can be high, medium, or low. The purchaser for Lawson's can order $1,2,$ or $3$ lots of the product before the season begins but cannot reorder later. Profit projections $($in thousands of dollars$)$ are shown.

$\backslash$table$[[,,,],[$State of Nature,,,$],[$Decision Alternative,$\backslash$table$[[$High Demand$],[s_1$