Question

Events A and B are mutually exclusive. Also, P(A) = 0.25 and P(B) = 0.35. What is P(A or B)?

A.0.1
B.0.25
C.0.35
D.0.6

Answer 1

.6

Explanation:

apex

Answer 2

The answer is D. 0.6

P(A or B) = P(A) + P(B) - P(A and B)
When the events are mutually exclusive, that means they cannot occur together:
P(A and B) is empty set, thus = 0
P(A) = 0.25
P(B) = 0.35
P(A or B) = 0.25 + 0.35 - 0 = 0.6