Complete parts(a) and(b) below.

The number of dogs per household in a small town

x P(x)

0 0.660

1 0.208

2 0.087

3 0.024

4 0.014

5 0.007

(a) Find themean, variance, and standard deviation of the probability distribution.

(b) Interpret the results in the context of thereal-life situation.