MA8391 PS Important Questions, PROBABILITY AND STATISTICS Answer Key –IT 4th Sem


MA8391 PS Important Questions

Anna University Regulation 2017IT MA8391 PS Important Questions with Answer Key and IT 4th Sem MA8391 PROBABILITY AND STATISTICS Engineering Answer Key is listed down for students to make perfect utilization and score maximum marks with our study materials.

1.If the probability density function of a random variable X is f(x) = ¼ in – 2 <x < 2 find P(|?| > 1)
2. If X is a geometric variate, taking values 1,2,3…..∞, ???? ?(? ?? ???) BTL1 Remembering
3. State the memory less property of the exponential distribution. BTL1 Remembering
4.The mean and variance of binomial distribution are 5 and 4 Find the distribution of X.
5.The mean of Binomial distribution is 20 and standard deviation is 4. Find the parameters of the distribution.

6.If the events A and B are independent then show that ?̅ and ? ̅ are independent.
7.If a random variable X takes values 1,2,3, 4 such that 2P(X 1)  3P(X  2)  P(X  3)  5P(X  4) . Find the probabilitydistribution of X.
8.Find the Moment generating function of a continuous random variable X whose pdf is
9.If 3% of the electric bulbs manufactured by a company are defective, Find the probability that in a sample of 100 bulbs exactly 5 bulbs are defective.
10.If a random variable X has the MGF ??(t) =22−?. Find the standard

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