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Determine the standard deviation of x

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1. x P(x) 0 0.17 1 0.45 2 0.20 3 0.12 4 0.06>4 0.00

The following probability distribution table is for the random variable, x, 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.

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

Round all answers a - c to 2 decimal places.

Reference no: EM132845876

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