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Determine the mean of x

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The following probability distribution table is for the random variable, x, the number of computers in a household. Show all work to answer the following questions.

x P(x)

0 0.12

1 0.25

2 0.30

3 0.28

4 0.05

(a) Determine the mean of x.

(b) Determine the standard deviation of x.

Show all work and round all answers to two decimal places.

Reference no: EM132410312

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