1.【A】解析：每个选项的期望货币价值等于每个预计现金流入乘以他们相应的概率，再进行加总。
选项 1的期望货币价值 = $50,000(0.1) + $75,000(0.2) + $100,000(0.4) + $150,000(0.3) = $105,000
选项 2 的期望货币价值 = $50,000(0.1) + $75,000(0.2) + $100,000(0.45) + $150,000(0.25) = $102,500
选项 3的期望货币价值 = $50,000(0.1) + $75,000(0.2) + $100,000(0.4) + $125,000(0.3) = $97,500
选项 4 的期望货币价值 = $150,000(0.1) + $100,000(0.2) + $75,000(0.4) + $50,000(0.3) = $80,000
2.【B】解析：Lions俱乐部将采购能使期望利润最大化的数量。每种采购的期望利润等于每个预计的利润水平乘以相应的概率，然后进行加总。
采购8,000个的期望价值= ($6,000)(0.1) + ($6,000)(0.4) + ($6,000)(0.3) + ($6,000)(0.2)=$6,000
采购10,000个的期望价值= ($4,000)(0.1) + ($8,000)(0.4) + ($8,000)(0.3) + ($8,000)(0.2)= $7,600
采购12,000个的期望价值= ($2,200)(0.1) + ($6,200)(0.4) + ($10,200)(0.3) + ($10,200)(0.2)= $7,800
采购15,000个的期望机制= (.$500)(0.1) + ($3,500)(0.4) + ($7,500)(0.3) + ($13,500)(0.2) = $6,300。采购12,000个有最高的期望利润
