Question

What must be true for P (A and B) = P (A) * P (B)?

Answer 1

P(A∣B)=P(A)⟺P(B∣A)=P(B)⟺P(A∩B)=P(A)P(B)

Answer 2

Thus, A and B must be?

Answer 3

A and B MUST BE independent

Answer 4

recall -> P(A|B) = P(AnB)/P(B)