Re: probability with independent.
- From: israel@xxxxxxxxxxx (Robert Israel)
- Date: 16 Oct 2006 05:27:26 GMT
In article <eguuie$7vl$1@xxxxxxxxxxxxxxxx>,
mina_world <mina_world@xxxxxxxxxxx> wrote:
hello sir~
if 2X and Y are independent,
then X and 2Y are independent.
Hint: What's the definition of independence
for random variables?
Express probabilities involving 2X and Y in terms of
probabilities involving X and 2Y.
--------------------------------------
um... i think...
Let W = 2X, Y = Y.
Let W and Y be continuous random variable having
joint density function f.
(of course, let joint distribution function be F_(W,Y) (w,y).)
Too complicated, and not general enough.
Robert Israel israel@xxxxxxxxxxx
Department of Mathematics http://www.math.ubc.ca/~israel
University of British Columbia Vancouver, BC, Canada
.
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