Question

If P (A') = 0.7, P(B) =0.7,P(BIA) =
0.5.then P(AUB) IS .... *
O
0.15
O 0.10
O 0.85
O
1​

Answer 1

Answer:

most appropriate ans 0.85

Step-by-step explanation:

p(A) +P(B) -p(AnB) =p(AUB)

p(A) = 1-P(A) = 1-0.7 = 0.3

p(B) = p(B/A) +p(AnB)

0.7 = 0.5 +p(AnB)

0.2= p(AnB)

p(AUB) = 0.3+0.7-0.2

= 0.8

≈0.85