Quote:
Originally Posted by **NotQuiteRandom** A and B are NOT independent in this instance. |
right. Didn't read with enough attention the following posts. Sorry
So let me see if I get it.
You have one event A, with probability pA. If A occurs, you look at the probability of another event B, pB|A. This is the probability of B occurring **after A occurred**. In this case pB, your probability a priori, should be pA * pB|A
If you don't know the probability of B after A occurred, but you only know the probability of B in general, then you have a problem, because you don't have any information about the relationship between A and B.
Hope I got it right. Winston any comments? |