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Find the expected value,variance and standard deviation of a random variable X whose pmf is given below.

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CHETANA PUBLICATION-PROBABILITY DISTRIBUTIONS-EXERCISE
  1. Given that p.d.f of a continuous r.v. f(x)=x^(2/3), for 1 < x < 2 a...

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  2. Find K,such that the function P(x)=K(4,3),x=0,1,2,3,4,K>0=0,otherwise ...

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  3. Find the expected value,variance and standard deviation of a random va...

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  4. The pmf for X=numbers of major defects in a randomly selected applianc...

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  5. The time (in minutes)that a lab assistant to prepare the equipment for...

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  6. P.d.f of a c.r.v X is f(x)=6x(1-x),for 0lexle1 and =0,otherwise(elsew...

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  7. If the p.d.f of a r.v.x is f(x)=3(1-2x^2),for 0ltxlt1 and =0,other wi...

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  8. If the p.d.f of a c.r.v. X is f(x)=x^2/18, for -3 < x < 3 and =0, oth...

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  9. If p.m.f of a d.r.v.X is P(X=x)=(^5CX)/2^5, for x=0,1,2,3,4,5 and =0,...

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  10. If X denotes the number obtained on the uppermost face when a fair di...

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  11. If X is a r.v with pmf P(x)=kx,for x=1,2,3,=0,otherwise,then K=………..

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  12. Let pmf of a random variable X is P(x)=(3-x)/10,x=-1,0,1,2.=0,otherwis...

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  13. If the pdf of continuous random variable X is given as f(x)=x^2/3,-1 <...

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  14. If the p.d.f of a c.r.v. X is f(x)=x^2/18, for -3 < x < 3 and =0, oth...

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  15. Verify whether f(x)=sin x for 0lexlepi/2 is pdf of r.v.X.

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  16. In a meeting.70% of the members favour and 30% oppose a certain propos...

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  17. Find the probability distribution of number of tails in the simultaneo...

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  18. If a r.v.X has p.d.f.,f(x)=c/x, For 1< x< 3 ,c>0, find c and E(X)

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  19. The pdf of r.v.X is given by P(X=x)=^5Cx/2^5,for x=0,1,2,3,4,5=0,other...

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  20. The pdf of r.v.X is given by f(x)=1/2a,for 0<x<2a, =0,otherwise, show ...

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