作者mmtobe (台科生的骄傲)
看板Statistics
标题一题满有深度的考题 高手来挑战看看吧^^"
时间Wed Feb 8 00:51:05 2006
Let X and Y be the waiting time for the occurrence of the first
event of two independent Poission process with equal 1.0.
Which of the following statement is true? and proof it!
Let U=X+Y and V=Y/X.
A. The condition distribution of X given U=u,X/U=u follows a
a uniform distribution .
B. The conditional distribution of V given X=x,V/X=x is
uniformly distributed over (0,1).
C. The range of V does not depend on the range of X.
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1F：推 susej:请问有答案吗? 02/08 19:30
2F：推 susej:A是对的,B是参数为x的指数分配,C我不会 02/08 19:34