hwk139_3-S11

hwk139_3-S11 - see which one of the two occurs rst. What is...

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UNIVERSITY OF CALIFORNIA, SANTA BARBARA Department of Electrical and Computer Engineering ECE 139 Probability and Statistics Spring 2011 Homework Assignment #3 (Due on Tuesday 4/19/2011 by 8 pm in the Homework Box ) A. Solve the following problems in the textbook: 1.6.4, 1.6.5, 1.7.4, 1.7.6, 1.8.2, 1.9.1, 1.9.3. B. Solve an additional problem : A and B are mutually exclusive events with proba- bilities P ( A ) and P ( B ), respectively. Independent trials of the experiment are performed to
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Unformatted text preview: see which one of the two occurs rst. What is the probability that event A occurs before event B ? Next solve a similar problem for the case where A and B are independent events (and not mutually exclusive). What is the probability that B does not occur before A ? (Here we allow for the possibility that they occur simultaneously). Note: Answers to part B should only be in terms of P ( A ) and P ( B ) ....
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