A bag contains 9 yellow marbles and 36 blue marbles. If a representative sample contains 3 yellow marbles, then how many blueblue marbles would you expect it to contain? Explain.

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is