Box 1 contains 3 Red balls and 1 Blue balls, while Box 2 contains 1 Red Ball and 1 Blue ball. A coin is tossed. If it lands a Head, Box 1 is selected. Otherwise Box 2 is selected. One ball is drawn at random from the chosen Box.
What is the probability that the drawn ball is Red?
If the coin is Head ------> Box 1
the probability that the drawn ball is Red is
P=3/4
if the coin is not head -----> Box 2
the probability that the drawn ball is Red is
P=1/2