week3_4_solution

# week3_4_solution - EE131A Discussion (week3) 4. Show that...

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EE131A Discussion (week3) 4. Show that if A and B are independent events, then A and B c , A c and B, and A c and B c , are also independent.

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EE131A Discussion (week4) 1. One of the two coins is selected at random and tossed three times. The coins are known to have probabilities of “heads”, p1 and p2, respectively, with p1>p2. Find the probability that coin 1 was tossed given that k heads were observed (k<=3). 3. A modem transmits a +2 voltage signal X into a channel. The channel adds to this signal a noise term N that is drawn from the set {0, -1, -2, -3} with respective probabilities {4/10, 3/10, 2/10, 1/10}. (a) Find the pmf of the output Y . ( Y=X+N ) (b) What is the probability that the output of the channel is equal to the input of the channel?
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## This note was uploaded on 02/09/2011 for the course EE 131A taught by Professor Lorenzelli during the Spring '08 term at UCLA.

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week3_4_solution - EE131A Discussion (week3) 4. Show that...

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