**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(|𝑥| > 1)

2. If X is a geometric variate, taking values 1,2,3…..∞, 𝑓𝑖𝑛𝑑 𝑃(𝑋 𝑖𝑠 𝑜𝑑𝑑) 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 𝐴̅ and 𝐵 ̅ 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 𝑀𝑋(t) =22−𝑡. Find the standard

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MA8391 PROBABILITY AND STATISTICS Engineering Answer Key free download

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MA8391 Answer Key, PS Unit wise Important Questions-IT4th Semester