Is this a probability distribution

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Problem: In a study of families with children with disabilities, groups of 6 US households were randomly selected. In the table below, the random variable x represents the number of households among 6 that had a child with a disability living there. 

x P(x)

0 0.02

1 0.15

2 0.29

3 0.31

4 0.21

5 0.02

a) Is this a probability distribution? 

b) What is the mean?

c) What is the standard deviation?

Reference no: EM132465314

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