Question

Of 1996 people who came into a blood bank to give blood, 294 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure

Answer 1

We know that out of the 1996 people, 294 had high blood pressure. We can use that to create a fraction.

294/1996 = 147/998 = 0.14729...

The probability of the next person having blood pressure is about 15%.