# Determining the probability from a given situation.

For a certain animal species, the probability that a female will have a certain number of offspring in a given year is given in the table below. Find the expected number of offspring per year.

Number of Offspring: 0

Probability: 0.31

Number of Offspring: 1

Probability: 0.21

Number of Offspring: 2

Probability: 0.19

Number of Offspring: 3

Probability: 0.17

Number of Offspring: 4

Probability: 0.12