How would we determine the probability of the negation of event A?

Question

Quizplus · Accepted Answer

The correct formula for the probability of the negation of event A (not A) is one minus the probability of event A. This is because the probability of not A is the complement of the probability of A, and the complement rule states that the probability of an event occurring plus the probability of that event not occurring equals one. Therefore, the probability of not A is 1 - P(A).

How Would We Determine the Probability of the Negation of Event