Mario received 0.40 in change from 20 when he bought tail mix. how many pounds of tail mix did mario buy? trail mix: $3.50 per pound

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