Question 888025
If those first 538 people are representative of all the people that come to that doctor’s office for annual check-ups, then
{{{215/538}}} of the people coming for annual check-ups have high blood pressure.
That is the probability that the next person who has a check-up will have high blood pressure:
{{{215/538}}}= approximately{{{0.3996="39.96 %"}}} .
You could round that to {{{0.40=highlight("40%")}}} .
(That may be the expected answer).
Since {{{0.4=2/5}}} , you could also say that the next person has a 2 in 5 chance of having high blood pressure.