[問題] 統計相關問題
1.Let X be the damage incurred (in$) in a certain type of accident during
a given year.
Possible X value are 0,1000,5000 and 10000 with possibilities 0.8,0.2
0.08,and 0.02,respectively. A particular company offers a $500
deductible(減免) policy. If the company wishes its expected profit
to be $100,
what premium amount should it charge?
A)700 B)800 C)1200 D)1300
這題是決策分析的東西嗎???
題目所說的減免500元政策 是直接扣possible X value嗎???
這樣應該要怎麼算呢??
2.
Determine a value of c such that in a problem of simple linear
n
regression, the statistic cΣ(Yi-β1-β2X1)^2 will be an unbiased
i=1
estimator of sigma^2 (打不出那圖案Orz)
這題應該怎麼證呢???
我證不出來>"<
可以稍微提示我一下就好 後續計算 自己來就好Orz
謝謝大家的幫忙^^
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※ 編輯: liliya 來自: 203.73.17.148 (03/03 23:15)
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