The Addition Law Flashcards
1
Q
What are mutually exclusive events
A
Can’t happen at the same time
2
Q
How to find the probability that either one or the other events happen for mutually exclusive events
A
P(A or B) = P(A) +P(B)
3
Q
How to find the probability that either one or the other events happens for non mutually exclusive events
A
P(A or B) = P(A) + P(B) - P(A and B)
4
Q
What are exhaustive events
A
Together they include all possible outcomes so at least one of them must happen
5
Q
What do you get if you add the probabilities of exhaustive mutually exclusive events
A
You always get 1
