Question

According to the Venn diagram, if P(A) = 0.4 and P(B) = 0.3, what is P(AuB)?A. 0.6B. 0.5C. 0.8D. 0.7

Answer 1

For this type of question, we recall the following:

`P(A\cup B)=P(A)+P(B)-P(A\cap B)`

From the Venn diagram, we have that

`P(A\cap B)=0.10`

Substituting P(A) = 0.4 and P(B)= 0.3 we get:

`P(A\cup B)=0.4+0.3-0.1=0.6`