Sherree recorded her golf scores for the first 8 games of the season. She is using a linear model to predict her scores in future games. Which should be Sherree's golf
score on her 12th game according to her model?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?