A choral group consists of 1 soprano, 5 altos, 4 tenors, and 3 basses. A group member is choser at random to sing a solo at a concert.

What is the probability that the soloist chosen is a bass?

There are a total of 1+5+4+3 = 13 members in the choral group.

The probability of choosing a bass as the soloist is:

3/13

Therefore, the probability of the soloist being a bass is 3/13.