View Single Post
Dec16-06, 04:06 PM
Sci Advisor
PF Gold
Fredrik's Avatar
P: 9,403
Quote Quote by Hurkyl View Post
That's not right; this computes the expected value of B given that A = a. Or, notationally,
E(B | A = a) = P(B=2A|A=a) * 2a + P(2B=A|A=a) * a/2
However, it is true that E(B) = E(A).
OK, thanks for pointing that out. I allowed myself to use my old sloppy terminology in the reply to Matt that I just posted, but I won't do that again.