Lecture31(11-12-2008) - C = 30 X + 25 Y . ind the mean and...

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36-225 – Handout for Lecture # 31 November 12, 2008 1. Let ( X, Y ) be jointly continuous with the following joint density: f XY ( x, y ) = ( x + y 0 x, y 1 0 otherwise In this case, X and Y denote the proportions of time that two employees actually spent working on their assigned tasks during a workday. We deFne a productivity measure
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Unformatted text preview: C = 30 X + 25 Y . ind the mean and variance of this measure. 2. Let ( X, Y ) be jointly continuous with the following joint density: f XY ( x, y ) = 1 x 1 x < y < x + 1 otherwise ind Cov ( X, Y )....
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