Question

Events A and B are mutually exclusive, with P(A) = 0.65 and P(B) = 0.14.


What is P(A or B)?









A.
0.091







B.
0.215







C.
0.51







D.
0.79

Answer 1

@paki

Answer 2

@queenleviosa

Answer 3

sim[ply, add both :-)

Answer 4

The proper name for the formula you need here is "addition formula for probability." I id an Internet search and came up with the following:

http://www.mathwords.com/a/addition_rule.htm

Please take a look at that.

Answer 5

as here no overlap

Answer 6

@.WhiteDragon.

Answer 7

Use Kolmogorov's third axiom of probability

http://en.wikipedia.org/wiki/Probability_axioms#Third_axiom