# Question: the table shows the distribution of household sizes in the...

###### Question details

The table shows the distribution of household sizes in the United States for a recent year.

x |
1 |
2 |
3 |
4 |
5 |
6 |
7 |

P(x) |
0.281 |
0.340 |
0.154 |
0.129 |
0.060 |
0.022 |
0.013 |

Find:

a)The mean

b)The variance

c) The Standard deviation

D) the expected value