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無母數計算問題

Jul 6th 2013, 11:42

有70位同學進行考試,共出3題4選1的選擇題.

答對題數: 0 1 2 3

人數 :30 27 10 3

1.試以α=0.05檢定學生是否每題都在猜答案
2.試以α=0.05檢定答對題是是否為二項式分配

想法:1. x~bin(n, 0.25),要請問n是多少?? 是3還是210?

2.用卡方檢定,答對0題期望人數= 0.75^3 * 70,依此類推?

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