Your test scores in one class are 81 and 89. what possible scores can you earn on your next test to have a test average between 85 and 90 inclusive?

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