98地特三等成管會申論 - 會計
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By James
at 2011-11-29T15:36
at 2011-11-29T15:36
Table of Contents
想請問申論第四題第二小題的餐盒數量如何計算?
(其他部分我可以理解所以就省略了)
題目:
(前略)
(六) 預計下學年訂購餐盒的機率分配如下:
預期數量 機率
25,000 0.050
26,000 0.150
27,000 0.400
28,000 0.250
29,000 0.150
試作:
(一)根據以上的資訊,列出算式,說明甲公司應否將餐盒製作外包?
(二)假設學校附近之工廠將關閉,甲公司估計若工廠關閉,學校的學生
人數將減少,餐盒的需求量維持在27,000或下降至25,000的機率將
上升,而且工廠關閉的機率約為90%。列出算式,說明甲公司應否
將餐盒製作外包?(請四拾五入求至小數點第三位)
解答:
(一) 餐盒數量 = 25,000 x 0.050 + 26,000 x 0.150 + 27,000 x 0.400 +
28,000 x 0.250 + 29,000 x 0.150
= 27,300
(二) 餐盒數量 = 27,000 x 0.1 + 25,000 x 0.9
= 25,200
我不太能理解第二小題的算式是怎麼來的
題目是說若工廠關閉則餐盒需求量27,000及25,000的機率將上升
但是從這個算式來看,數量27,000反而機率下降?
而且為什麼不考慮數量26,000的機率,數量25,000的機率又是怎麼得來的?
麻煩幫我指點迷津,謝謝!
--
(其他部分我可以理解所以就省略了)
題目:
(前略)
(六) 預計下學年訂購餐盒的機率分配如下:
預期數量 機率
25,000 0.050
26,000 0.150
27,000 0.400
28,000 0.250
29,000 0.150
試作:
(一)根據以上的資訊,列出算式,說明甲公司應否將餐盒製作外包?
(二)假設學校附近之工廠將關閉,甲公司估計若工廠關閉,學校的學生
人數將減少,餐盒的需求量維持在27,000或下降至25,000的機率將
上升,而且工廠關閉的機率約為90%。列出算式,說明甲公司應否
將餐盒製作外包?(請四拾五入求至小數點第三位)
解答:
(一) 餐盒數量 = 25,000 x 0.050 + 26,000 x 0.150 + 27,000 x 0.400 +
28,000 x 0.250 + 29,000 x 0.150
= 27,300
(二) 餐盒數量 = 27,000 x 0.1 + 25,000 x 0.9
= 25,200
我不太能理解第二小題的算式是怎麼來的
題目是說若工廠關閉則餐盒需求量27,000及25,000的機率將上升
但是從這個算式來看,數量27,000反而機率下降?
而且為什麼不考慮數量26,000的機率,數量25,000的機率又是怎麼得來的?
麻煩幫我指點迷津,謝謝!
--
Tags:
會計
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