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    Statistics: Mean, Variance and Random Variable

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    Given the values below:
    1.
    mu = 2 and (sigma^2) = 0.5

    a) Find the mean of the random variable:
    Z = 3x - 2

    b) Find the variance of the discrete random variable above.

    2. Given: Z = 2x + 3

    a) If the mean of X = 4, what is the mean of Z?

    b) If the variance of x = 0.8, Find (sigma^2) of z

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    https://brainmass.com/statistics/variance/statistics-mean-variance-random-variable-375865

    Solution Preview

    Mean and variance.

    Given the values below:
    1. mu = 2 and (sigma^2) = 0.5

    a) Find the mean of the random variable:
    E(Z) = ...

    Solution Summary

    This solution helps with a problem about statistics.

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