作者feedten (喂十)
看板juniorhigh
标题[问题] 有关统计的问题
时间Thu Apr 1 02:03:28 2010
题目如下
Let X1 and X2 be iid random variables of an exponential distribution
with λ=1 , than Z = X1/X2 has a(n)__________distribution
if Y = 1/(1+Z), than Y has a(n)___________distribution
有请统计神手帮算
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