A and B are mutually exclusive events. P(A) = 0.20 and P(B) = 0.70. What is P(A or B)? A. 0.90
B. 0.50
C. 0.14
D. 0.28​

0.90

Step-by-step explanation:

If A and B are mutually exclusive events, P(A or B) is the sum of probability of A and probability of B.

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

Given that, P(A) = 0.20 and P(B) = 0.70

Then,

P(A or B) = 0.20 + 0.70

P(A or B) = 0.90

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

answer by yourhope:

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