In a class of 40 students, 22 are women, 10 are earning an A, and 7 are women that are earning an A. If a student is randomly selected from the class, find the probability that the student is a woman
Or earning an A.
A).625
B).25
C).8
D).975

Question

Quizplus · Accepted Answer

To find the probability that a student is a woman or earning an A, we use the formula for the probability of the union of two events: P(A or B) = P(A) + P(B) - P(A and B). Here, P(A) is the probability of being a woman (22/40), P(B) is the probability of earning an A (10/40), and P(A and B) is the probability of being a woman earning an A (7/40). So, P(A or B) = (22/40) + (10/40) - (7/40) = 25/40 = 0.625.

In a Class of 40 Students, 22 Are Women, 10