Reasoning
Probability of Mutually Exclusive Events
Find probability of either of two mutually exclusive events.
P(A or B) = P(A) + P(B)
Formula Explanation
Mutually exclusive events cannot occur together.
Variables Explained
P(A), P(B) = individual probabilities.
Solved Example
P(A)=0.3, P(B)=0.4. P(A or B)?
0.3 + 0.4 = 0.7.