Statistics and probability

Question

We surveyed 255 people. The table below shows that the soft drink preferences of people in three age groups.

	Cola	Root Beer	Lemon-lime
Under 21 years old	40	25	20
21 - 40 years old	35	20	30
Over 40 years old	20	30	35

Given the root beer drinkers, what is the probability that the individual is between 21 and 40 years old?

**Use 4 decimals**

Answer 1

Hi Ange R., To find this probability, "given" means that you are only interested in the root beer drinkers. Where are they in the table? What is the total number of root beer drinkers? Out of that total, how many are between 21 and 40 years old? That will give you the probability. Tom S.