Event A occurs with probability 0.2. Event B occurs with probability 0.3. Event C occurs with probability 0.4. If A, B, and C are disjoint, then which of the following probabilities is (are) correct?

Question

Quizplus · Accepted Answer

Since events A, B, and C are disjoint, the probability of any combination of these events occurring is simply the sum of their individual probabilities. Therefore, P(A or B) = 0.2 + 0.3 = 0.5, P(A or C) = 0.2 + 0.4 = 0.6, and P(A or B or C) = 0.2 + 0.3 + 0.4 = 0.9, making all choices correct.

Event a Occurs with Probability 0