Question

use the given information to find the indicated probability. p(a) = 0.1, p(b) = 0.8, p(a ∩ b) = 0.05. find p(a ∪ b).

Answer 1

Explanation:

p ( a ) = 0.1

p ( b ) = 0.8
p ( a ∩ b ) = 0.05

p ( a ∪ b ) = p ( a ) + p ( b ) - p ( a ∩ b )
p ( a ∪ b ) = 0.1 + 0.8 - 0.05
= 0.90 - 0.05

= 0.85