A life insurance salesperson expects to sell between zero and five insurance policies per day. The probability of these is given as follows:

Policies Per Day Probability, f(x)

0 .23

1 .08

2 .31

3 .18

4 .11

5 .09

Find the expected number of insurance policies that the salesperson will sell per day. Also, find the variance and standard deviation of this data.

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