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【正文】 s sold: Beginning inventory $ 17,600 Variable manufacturing costs 51,200 Fixed manufacturing costs 8,000 Less ending inventory (3,700) Cost of goods sold (73,100) Gross profit $ 46,900 Selling administrative expense: variable($3/unit) $ 12,000 Fixed 10,000 Total (22,000) Net ine $ 24,900 Variable costing December Sales($30/unit) $ 120,000 Less variable expenses: Cost of goods sold $ 64,000 Selling administrative 12,000 Total (76,000) Contribution margin $ 44,000 Less fixed expenses: (72,000) Manufacturing overhead $ 8,000 Selling administrative 10,000 Total (18,000) Net ine $ 26,000 $ 8,000 247。 3,200 = $ $ X 1000 $ X 200 = $ 1,100 15 Expected Value 在事件發(fā)生之前,我們所能預(yù)估此事件發(fā)生的可能之值,因此假設(shè)某事件發(fā)生之機(jī)率為 Pi,若該事件發(fā)生即可得到 Mi元,則此事件的期望值則定義為 : Pi*Mi元 投擲一顆骰子,若猜中點(diǎn)數(shù)即可獲得 50元,每玩一次需押注 10元,令 X為出現(xiàn)的點(diǎn)數(shù),則 X之期望值 E(X) = 50 x 1/6 + (10) x 5/6 = 0 16 Payoff table 小王假日時(shí)都會(huì)在棒球場(chǎng)外販賣熱狗,熱狗每根成本 $5,售價(jià) $10,但如果當(dāng)天無(wú)法出售的話,小王會(huì)把剩餘的熱狗報(bào)廢掉,通常熱狗的銷量並不固定。 依據(jù)小王估計(jì),有 50%的機(jī)率可以賣掉 1,500根,有 30%的機(jī)率可以賣掉 2,500根,有 20%的機(jī)率可以賣掉 3,500根。 可能發(fā)生的事件 選 擇 的 方 案 1,500根 (50%) 2,500根 (30%) 3,500根 (20%) 期望值 1,500根 $ 5 x 1,500 = 7,500 $ 5 x 1,500 = 7,500 $ 5 x 1,500 = 7,500 $ 7,500 2,500根 $ 5 x 1,500 $ 5 x 1,000 = 2,500 $ 5 x 2,500 = 12,500 $ 5 x 2,500 = 12,500 $ 7,500 3,500根 $ 5 x 1,500 $ 5 x 2,000 = (2,500) $ 5 x 2,500 – $ 5 x 1,000 = 7,500 $ 5 x 3,500 = 17,500 $ 4,500 ** 7,500 x + 7,500 x + 7,500 x = 7,500 2,500 x + 12,500 x + 12,500 x = 7,500 (2,500) x + 7,500 x + 17,500 x = 4,500 完美資訊價(jià)值 (Expected Value of Perfect Information) = 7,500 x + 12,500 x + 17,500 x – 7,500 = 3,500 17 演講完畢,謝謝觀看!
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