Amy has a bag with 20 marbles in it. some of the marbles are blue, some are green, and some are yellow. she draws one marble at random, records the color, and returns it to the bag. here is her data after 500 trials: blue green yellow blue 127 green 201 yellow 172 estimate the probability that a marble drawn at random will be blue. estimate the probability that a marble drawn at random will be green. estimate the probability that a marble drawn at random will be yellow. express each probability estimate as a fraction with 20 in the denominator.