Events A and B are Independent. Find the missing probability P(A)=1/4 P(B)=3/5 P(B/A)=?

Question

asked Dec 10, 2020 110k views

1 Answer

Eli Acherkan · Answer 1 · 2020-12-15T11:16:49+0000

Step-by-step explanation:

P(B/A) is the shorthand way of saying "what is P(B) if we are 100% certain that event A has occured?"

Because events A and B are independent, they do not affect one another. The fact that A happens doesn't change P(B) at all.

Therefore, P(B) = P(B/A) when A & B are independent events.

Similarly, P(A) = P(A/B) when the two events are independent.