Mutually exclusive events are events that can not happen at the same time. Examples include: right and left hand turns, even and odd numbers on a die, winning and losing a game, or running and walking. Non-mutually exclusive events are events that can happen at the same time.

How do you know if events are not mutually exclusive?

If they are different, they are not mutually exclusive. ... If they are mutually exclusive (they can't occur together), then the (∪)nion of the two events must be the sum of both, i.e. 0.20 + 0.35 = 0.55. In our example, 0.55 does not equal 0.51, so the events are not mutually exclusive.

When A and B are not mutually exclusive for events?

If the events A and B are not mutually exclusive, the probability of getting A or B is given as: P (A or B) = P(A) + P(B) – P (A and B) Two events are said to be dependent if the occurrence of one event changes the probability of another event.