Read the story. On her way out of the toy store, Janelle stops to get 2 gumballs from the giant gumball machine. Her favorite flavor is blue raspberry, but only about 30% of the gumballs in the machine are blue. How likely is it that both of the gumballs Janelle gets will be blue? Janelle simulates the situation by putting 3 blue marbles and 7 yellow marbles in a bag. She picks a marble, then returns it to the bag, 2 times. Each time a blue marble appears, it represents a blue gumball. Janelle records the results by writing "B" for a blue marble and "Y" for a yellow marble. Here are the results of 20 trials: YY YB YY YY BY YB YY BB BY YY YY YB YY YY BY YY BY YY BY YY Based on Janelle's results, what is the probability that both of the gumballs will be blue?
