Fifty-nine percent of U.S. adults think that civil rights for Black Americans have improved during their lifetime. You randomly select eight U.S. adults. Find the probability that the number who think that civil rights for Black Americans have improved during their lifetime is (a) exactly three and (b) exactly four (a) The the probability that the number who think that civil rights for Black Americans have improved during their lifetime is exactly three is (Round to three decimal places as needed.) (b) The the probability that the number who think that civil rights for Black Americans have improved during their lifetime is exactly four is (Round to three decimal places as needed.)