Calculate P (A or B) in the following scenarios: a. P(A)=0.27, P(B)=0.03; A and B are mutually exclusive
If events A and B are mutually exclusive, it means they cannot occur at the same time. Therefore, the probability of event A or event B happening (P(A or B)) can be calculated by adding the individual probabilities together.
P(A or B) = P(A) + P(B) = 0.27 + 0.03 = 0.30
Therefore, the probability of event A or event B happening is 0.30 or 30%.