本人文科小白,在此请教各位NN,下面一段话中划线部分是啥意思?看的很纠结。。。
Two events AandB are said to be independent if the occurrence of either event does not alter the
probability that the other event occurs. For one roll of the number cube, let A= |2, 4, 6| and let
B=|5, 6|. Then the probability that A occurs is P(A) =1/2, while, presuming B occurs, the probability that A occurs is: lA and B l / lB l=|6|/J5, 6J.=1/2。