作者liliya ()
看板Statistics
標題Re: [問題] 統計的假設檢定問題(型I誤差)
時間Fri Feb 22 13:42:15 2008
A random sample of 400 voters in a certain city are asked if they
favor an additional 4% gasoline sales tax to provide badly needed
revenues for street repairs. If more than 220 but fewer than 260
favor the sales tax, we shall conclude that 60% of the voters
are for it.
(1) If 60% of the voters favor the incresed tax, what is the type I
error? (2)If actually only 48% of the voters are in favor of the
additional gasoline tax, what is the typeII error?
我知道 型I誤差 =P(拒絕H0|H0為真)
但搞不太懂他的H0 欲否定的假設是??? Orz
請問大家 大概的意思 假設是????
謝謝大家的幫忙!! ^^"
A)TypeI error is 0.0094 and TypeII error is 0.0061
B)TypeI error is 0.0046 and TypeII error is 0.0122
C)TypeI error is 0.0046 and TypeII error is 0.0061
D)TypeI error is 0.0094 and TypeII error is 0.0122
參考大家算法 都沒有以上的答案耶>"<
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1F：推 mrk:你說的是型二誤差耶。o_O 02/22 15:10
2F：→ mrk:阿，我說錯了。xD 02/22 15:11
3F：推 bbenson:答案是A吧 0.0 02/22 23:56
4F：→ liliya:可以請問樓上 大概是怎麼算的呢?? @@ 02/23 13:03
5F：推 shortmason:我剛剛算也是算你之前那答案...太詭異了 02/25 20:39