If P(A)=0.5P(A) = 0.5P(A)=0.5, P(B)=0.4P(B) = 0.4P(B)=0.4, and P(A∣B)=0.5P(A|B) = 0.5P(A∣B)=0.5, which of the following is true?
AAA and BBB are mutually exclusive.
AAA and BBB are independent.
P(A∪B)=0.9P(A \cup B) = 0.9P(A∪B)=0.9
P(A∣B)=P(Ac∣B)P(A|B) = P(A^c|B)P(A∣B)=P(Ac∣B)