If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
.15^3 * .85^9 = ?
Based on the data collected by the National Centre for health Statistics and made available to the public in the Sample Adult database, it was found that the percentage of adults who have at some point in their life been told that they have hypertension was 15%. Suppose that a random sample of 12 adults is taken. What is the probability that exactly three have been told that they have hypertension?
1 answer