Probability Flashcards
1
Q
You cannot simply add probabilities to calculate P(AuB) if probabilities aren’t mutually exclusive
A
P(AuB)=P(A)+P(B)-P(AnB)
ALWAYS because when A and B are mutually exclusive , P(AnB)=0
2
Q
What is the probability of P(AnB)?
A
Probability that both event A and B occur.
3
Q
P(AuB)?
A
The probability that event A or event B occur.
4
Q
What does it mean when it says “given that”?
A
- P(A/B)
