The probabilities of occurrence of events A, B, and C are .2, .3, and .3, respectively. If any one of the events occurs, the others can't. What is the probability of either A or C occurring?
A) .06
B) .80
C) .50
D) can't be determined from what is given

Question

Quizplus · Accepted Answer

Since events A, B, and C are mutually exclusive, the probability of either A or C occurring is the sum of their individual probabilities: 0.2 + 0.3 = 0.5.

The Probabilities of Occurrence of Events A, B, and C