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Anna University Question Paper Code :.51574
B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014.
Fourth Semester
Computer Science and Engineering.
MA 2262/MA.44/MA 1252/080250008/10177 PQ 401 – PROBABILITY AND QUEUEING THEORY
(Common to Information Technology)
(Regulation 200812010)
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PART A — (10 x 2 = 20 'marks)
1. A continuous random variable X has the probability density function given by
f(x) = a*l+-x2), 2 5 0 otherwise
Find a and P(X < 4).
2. For a binomial distribution with mean 6. and standard deviation find the first two terms of the distribution.
3. Find the- value of k, i the joint density function of (X, Y) is. given by t.(x, y) = 0 {k0 x)(1. • y), 0 x < 4,1 < Y.< 5 otherwjse
4. Given . that. joint probability density function of (X, Y as
f(x, y) = 1 , 0 < x < 2, 0 < y 3, determine the marginal density.' 6
5. Define strict sense and wide sense stationary process.
6. A gambler has RS. 2. He bets ike. 1 at a time and wins •Re. 1 with proba'bility 112. He stops playing if he loseS Rs. 2 or wins Rs. 4. What is the transition probability Matrix of the related Matkoir chain?
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