There are two bags containing only purple and white marbles. bag a has 12 white marbles and 8 purple marbles. bag b has 6 white marbles and 10 purple marbles. a marble is randomly chosen from each bag. list these events from the least likely to the most likely. event 1: choosing a white marble from bag a. event 2: choosing a purple marble from bag b. event 3: choosing a yellow marble from bag a. event 4: choosing a white or purple marble from bag b.