作者kbamj (ya^^)
看板Statistics
标题请问一题有关卡方分配的
时间Thu Apr 13 14:02:11 2006
请问一下这提要怎麽算呢~
P.S 卡方我用χ2表示
If 10 observations are taken independently from a χ2 distribution
with 19 degrees of freedom, find the probability that exactly two
of the 10 sample items exceed 30.144.
题目有给χ2 0.05(19)=30.144 (卡方自由度19 α=0.05)=30.144
这题是跟可加性有关吗,还是~想不出来
麻烦了~谢谢^^
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1F：→ kbamj:以解答:)感谢 04/13 15:19