a city hospital ran a drive through area blood banks to boost supplies. During the week of the drive, 1527 people came into a blood bank to give blood, 420 of whom had high blood pressure (a) estimate...

a city hospital ran a drive through area blood banks to boost supplies. During the week of the drive, 1527 people came into a blood bank to give blood, 420 of whom had high blood pressure

(a) estimate the probability that the next person who comes in to give blood will have high blood pressure. you should leave your answer in fraction form.

(b) estimate the probability that the next 3 people who give blood do not have high blood pressure.