Question 1120439
Independence means P( E and F)=P(E)*P(F)
P(E U F) means P(E)+P(F)-PiBoth), which is the overlap, which is P(E and F)
So A is the sum (0.8)-the product(0.15), leaving 0.65, the union.
B is 0.5-0.04 or 0.44
C is 1.0-0.21 or 0.79