P(a) = 0.50, p(b) = 0.30, and p(a and b) = 0.15. what is p(a or b)?

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.5 + 0.3 - 0.15

P(A or B) = 0.80 - 0.15

P(A or B) = 0.65

The answer is B.

answer: hey there,

the answer you are looking for is a..

hope this you!