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

What is the probability of selecting someone at random who prefers lemon-lime ?

**Use 4 decimals**

Answer 1

probability of selecting someone at random who prefers lemon-lime

=P(selecting someone at random who prefers lemon-lime)

=number of people who prefers lemon-lime / total number of people

=(20+30+35) / 255

=0.3333