(c) Infer E[W] without resorting to lengthy calculations but make sure you justify your inference. (d) Investigate whether W and V are independent.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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part C D

1. Consider the following joint moment generating function of the random variables V
and W:
5 – 3s – 3t + 2st
4.
Myw(s,t) =
5 (1- s)(2 – s)(1 – t)(2 – t)'
defined for s < 1, t < 1.
(a) Obtain My(s) and Mw(t).
(b) Compute E[V].
(c) Infer E[W] without resorting to lengthy calculations but make sure you justify
your inference.
(d) Investigate whether W and V are independent.
Transcribed Image Text:1. Consider the following joint moment generating function of the random variables V and W: 5 – 3s – 3t + 2st 4. Myw(s,t) = 5 (1- s)(2 – s)(1 – t)(2 – t)' defined for s < 1, t < 1. (a) Obtain My(s) and Mw(t). (b) Compute E[V]. (c) Infer E[W] without resorting to lengthy calculations but make sure you justify your inference. (d) Investigate whether W and V are independent.
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