One of the most powerful abilities of probability is the ability to make predictions. By knowing the probability of an event occurring, we can make a guess as to how many times the event will occur over time.
Out of the people who have already signed up for a genetics lecture, 6 people have blue eyes while 4 people do not. Considering this data, how many of the next 30 people to sign up should you expect to be blue-eyed?
First write the experimental probability as a fraction in simplest form.
The experimental probability is
You should expect 18 of the next 30 people to be blue-eyed.