A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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We have the following information about the random variables X and Y: μχ = 1.5, My = 2 , σχ = 1, σγ = 1.5, Cov (X, Y) = 0.36. Calculate the standard deviation of Z = -2X + 4Y + 1, ση:
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Transcribed Image Text:We have the following information about the random variables X and Y: μχ = 1.5, My = 2 , σχ = 1, σγ = 1.5, Cov (X, Y) = 0.36. Calculate the standard deviation of Z = -2X + 4Y + 1, ση:
Expert Solution
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Step 1: Given information.

For the random variables X and Y, the following information is given:

mu subscript X equals 1.5 mu subscript Y equals 2 sigma subscript X equals 1 sigma subscript Y equals 1.5 Cov left parenthesis X comma Y right parenthesis equals 0.36

The random variable Z is defined as Z equals negative 2 X plus 4 Y plus 1.

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