100年地方特考教育行政類組-教育統計 - 特考
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By Connor
at 2013-05-24T09:46
at 2013-05-24T09:46
Table of Contents
100年地特-教育行政-教育統計
這是考選部的原題目:
http://wwwc.moex.gov.tw/ExamQuesFiles/Question/100/100240_40920.pdf
這是公職王提供的解答:
http://www.public.com.tw/2002/exam2/course/00040002000800040006.pdf
我想請問第四大題...
我覺得這題...好奇怪啊
第(二)小題問 Ho:Ux = Uy v.s. Ho:Ux > Uy 的拒絕區為何
我覺得這題題目應該是筆誤
應該是要問 Ho:Ux = Uy v.s. H1:Ux > Uy 的拒絕區為何
如果是這樣的話,那第二小題就是右尾檢定
那接著第(三)小題
問說如果Uy=Ux+1,統計考驗力如何?
這小題應該是要算power檢定力
到這裡我就有點疑惑了,這第(三)小題的假設檢定是不是和第(二)小題不同?
因為Uy=Ux+1 → Ux-Uy=-1 → Ux < Uy
所以應該是 Ho: Ux >= Uy v.s. H1: Ux < Uy
(Ux-Uy>=0) (Ux-Uy<0)
_ _ _ _
拒絕域C={Z | Z<-Z(0.05) = -1.645} = {X-Y | (X-Y-0)/√2 < -1.645}
_ _ _ _
={X-Y | (X-Y) < -1.645*√2 }
_ _ _ _
={X-Y | (X-Y) < -2.3264 }
_ _
power = P(reject Ho | H1 is ture) = P[(X-Y) < -2.3264 | Ux-Uy=-1 ]
_ _
= P[((X-Y)-(-1))/√2 < (-2.3264-(-1))/√2 | Ux-Uy=-1 ]
= P(Z < -0.9379) ≒ 0.1736
請問這樣算對嗎?
謝謝
--
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══╯ ╙╰══ ╟║ ◢◤ ◥◣ ◢◤ ◥◣ ◢◤ ◥◣
ζ 流星小天使
--
這是考選部的原題目:
http://wwwc.moex.gov.tw/ExamQuesFiles/Question/100/100240_40920.pdf
這是公職王提供的解答:
http://www.public.com.tw/2002/exam2/course/00040002000800040006.pdf
我想請問第四大題...
我覺得這題...好奇怪啊
第(二)小題問 Ho:Ux = Uy v.s. Ho:Ux > Uy 的拒絕區為何
我覺得這題題目應該是筆誤
應該是要問 Ho:Ux = Uy v.s. H1:Ux > Uy 的拒絕區為何
如果是這樣的話,那第二小題就是右尾檢定
那接著第(三)小題
問說如果Uy=Ux+1,統計考驗力如何?
這小題應該是要算power檢定力
到這裡我就有點疑惑了,這第(三)小題的假設檢定是不是和第(二)小題不同?
因為Uy=Ux+1 → Ux-Uy=-1 → Ux < Uy
所以應該是 Ho: Ux >= Uy v.s. H1: Ux < Uy
(Ux-Uy>=0) (Ux-Uy<0)
_ _ _ _
拒絕域C={Z | Z<-Z(0.05) = -1.645} = {X-Y | (X-Y-0)/√2 < -1.645}
_ _ _ _
={X-Y | (X-Y) < -1.645*√2 }
_ _ _ _
={X-Y | (X-Y) < -2.3264 }
_ _
power = P(reject Ho | H1 is ture) = P[(X-Y) < -2.3264 | Ux-Uy=-1 ]
_ _
= P[((X-Y)-(-1))/√2 < (-2.3264-(-1))/√2 | Ux-Uy=-1 ]
= P(Z < -0.9379) ≒ 0.1736
請問這樣算對嗎?
謝謝
--
╭══ * ╓╭══ ╔╭══╮
║╣ ╟║ ★ ╟║ ║ ◥◣ ◢◤ ◥◣ ◢◤ ◥◣ ◢◤
╰══╮ ╟║ ☆ ╟║══╯ * ◥█◤ * ◥█◤ ★◥█◤
╟║ ╟║ ╟║ ☆ ◢█◣ * ◢█◣ ◢█◣*
══╯ ╙╰══ ╟║ ◢◤ ◥◣ ◢◤ ◥◣ ◢◤ ◥◣
ζ 流星小天使
--
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