Question

A random sample about people's favorite primary color yielded the following results.

Color Number
blue 9
yellow 2
red 4
If there are 90 people in the population, how many would you expect to prefer yellow?

12
24
30
36

Answer 1

The answer is 12.
As 2 prefer yellow from 15 people then the probability of choosing yellow is 2/15
now total no. of people are 90
therefore no. of people choosing yellow colour is = 2/15×90=12.