Given independent random variables with means and standard deviations as shown, find the mean and standard deviation

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Given independent random variables with means and standard deviations as shown, find the mean and standard deviation of:
a) 2Y + 20
b) 3X
c) 0.25X + Y
d) X - 5Y
e) X1 + X2 + X3

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Stats Data And Models

ISBN: 662

4th Edition

Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock

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