A neighborhood group is building a playground. They plan to cover the surface with a rubber base with coordinates at . Each square unit represents one square yard.

How many square yards of rubber surface do they need?

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