1 The following probability distribution table is for the random variable, , the number of children under the age of 20 years in households of a small town Remember to show all work to answer the following questions x P(x) 0 0 17 1 0 40 2 0 25 3 0 11 4 0 07 4 0 00 a)Determine the mean of x b)Determine the standard deviation of x c)Find the probability of a household consisting of 3 or more children under the age of 20

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Question: 1. The following probability distribution table is for the random variable, , the number of children under the age of 20 years in households of

1.The following probability distribution table is for the random variable, , the number of children under the age of 20 years in households of a small town.Remember to show all work to answer the following questions.

P(x)

0.17

0.40

0.25

0.11

0.07

> 4

0.00

a)Determine the mean of x .

b)Determine the standard deviation of x.

c)Find the probability of a household consisting of 3 or more children under the age of 20.

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