What is the probability that you drew the ball from bag a
Econometrics
There are two bags, each each containing 100 ping-pong balls. Bag A contains 100 red balls and no black ball, and bag B contains 20 red and 80 black. you are are blindfolded and reac into a bag.There is a .5 probability it is bag A and .5 probability it si bag B. You drew a red ball. What is the probability that you drew the ball from bag A?
