Question

Students in the high school choir sing one of four voice parts.

tenors 2
sopranos 9
altos 20
basses 14
What is the probability that a randomly selected singer will be a soprano?

Answer 1

1/5 or 0.2 (20%).

Explanation:

Given:

Tenors 2

Sopranos 9

Altos 20

Basses 14

The total number of singers is:

Total = Tenors + Sopranos + Altos + Basses

Total = 2 + 9 + 20 + 14

Total = 45

Probability = Number of Sopranos / Total Number of Singers

Probability = 9 / 45

Probability = 1/5