Question

Suppose that the following table contains the complete probability distribution for the number of credit cards...

Suppose that the following table contains the complete probability distribution for the number of credit cards owned by adults in a certain country. Complete parts a and b to the right.

Number_of_Credit_Cards Probability
0 0.29
1 0.26
2 0.11
3 0.09
4 0.08
5 0.06
6 0.05
7 0.03
8 0.02
9 0.01

a) compute the mean number of credit cards:

b) compute the standard deviation.

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