經濟學假設和現實[or其它學科]矛盾? - 經濟
By Liam
at 2008-03-28T15:04
at 2008-03-28T15:04
Table of Contents
※ 引述《jingway (jingway)》之銘言:
: 第四個疑問:您的2.裡面的問題似乎像是腦筋急轉彎吧,
: 先用一個結論誤導受試者,再問一個看似相近但其實不一樣的問題。
: 況且,"人是否理性"與"人會不會答錯/犯錯"是兩回事。
: 理性的人就一定能答對這道問題嘛?
: 答錯的人就一定是不理性的嘛?
檢測準確率 99.99%,一萬人會有一人感染
檢測到有感染,問此人真的感染之機率
這問題是貝氏定理的應用:0.9999*0.0001/(0.9999*0.0001+0.0001*0.9999)= 0.5
能不能請你解釋一下,要均等分配才會 1/2 是怎麼來的?
--
: 第四個疑問:您的2.裡面的問題似乎像是腦筋急轉彎吧,
: 先用一個結論誤導受試者,再問一個看似相近但其實不一樣的問題。
: 況且,"人是否理性"與"人會不會答錯/犯錯"是兩回事。
: 理性的人就一定能答對這道問題嘛?
: 答錯的人就一定是不理性的嘛?
檢測準確率 99.99%,一萬人會有一人感染
檢測到有感染,問此人真的感染之機率
這問題是貝氏定理的應用:0.9999*0.0001/(0.9999*0.0001+0.0001*0.9999)= 0.5
→ ealvis:囧rz" 2 outcome + normal disti. 才會1/2118.166.150.29 03/28 10:21
→ ealvis:看到這個真的是下巴都掉了 囧rz118.166.150.29 03/28 10:22
→ ealvis:帶原跟感染是不同命題阿 囧rz118.166.150.29 03/28 10:26
→ ealvis:更正, 是uniform, not normal118.166.150.29 03/28 11:15
能不能請你解釋一下,要均等分配才會 1/2 是怎麼來的?
--
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