Question

let A and B be two event s such that P(A) = 1/2. while P(A or B) = 1/2. let P(B) = P for what values of P are A and B independent?

Answer 1

Answer:

P(A or B) = P(A) + P(B) = 1/2

If P(A) = 1/2 then P(B) = 0