If two equally likely events A and B are mutually exclusive and collectively exhaustive, what is
The probability that event A occurs?
A) 0.
B) 0.50.
C) 1.00.
D) Cannot be determined from the information given.

Question

Quizplus · Accepted Answer

Since events A and B are mutually exclusive and collectively exhaustive, their probabilities must add up to 1. Given they are equally likely, the probability of event A is 0.50.

If Two Equally Likely Events a and B Are Mutually