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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

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