EXAM 4 Questions Spring 2007 - Question 4(6 points Px,y(x,y...

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Exam 4   Start time:  May 21, 2007 11:25pm   Question 1    (6 points) Given a time function w(t) = a rectangular pulse amplitude = 2.0, width = 0.2 seconds, and starts at t = 0. Find its  autocorrelation function Rww(u).  Question 2    (6 points) Show that Var(x) = E[ x^2] - (E[X])^2.  Question 3    (6 points) PRoblem 6.6.1 parts (a), (c), and (e) 
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Unformatted text preview: Question 4 (6 points) Px,y(x,y) = c|x + y| for x = -2, 0, 1; and y= -2, 0, 2 and 0 otherwise. Find(a) the value for c. and (b) What is the P[ Y = X]? Question 5 (6 points) Find the PMF of Z = X1 + X2 in example 6.19 using MATLAB. BE SURE TO SHOW THE MATLAB CODE USED...
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