Question

I need help to find the missing probability. A and B are independent.P(B)=11/20 P(A and B)= 33/80P(A)=?

Answer 1

Independent event

P(A and B) = P(A) x P(B)

33/80 = P(A) x11/20

p(A) = (33/80) / (11/20 )

p(A) = (33x20)/(88x11)

= 660/968 = 165/242

=0.6818