Question

Events A and B are mutually exclusive. Also, P(A) = 0.54 and P(B) = 0.09.
What is P(A or B)?

A.
0.63

B.
0.45

C.
0.17

D.
0.09

Answer 1

Since they are mutually exclusive, on a Venn diagram they have no overlap -- that is, there intersection is the empty set.

In general, P(A or B) = P(A) + P(B) - P(A and B). However, P(A and B) is 0, since the probability of the null set is 0, thus P(A or B) = P(A) + P(B).

Answer 2

So A?

Answer 3

Yup.

Answer 4

Thnx