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Four coins are tossed once,find the prob...

Four coins are tossed once,find the probabiity of getting(i)exactly two heads(ii)atleast 2 heads(iii)atmost 2 heads.

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PREMIERS PUBLISHERS-PROBABILITY DISTRIBUTIONS-PROBLEMS FOR PRACTICE
  1. Four coins are tossed once,find the probabiity of getting(i)exactly tw...

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  2. A random variable x has the following probability distribution T...

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  3. X is a ranodm variable having the following of probability mass functi...

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  4. If F(x)={{:(kx^(3),0ltxlt2),(0,"otherwise"):} is probability density ...

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  5. If X is a continuous random variable then P(X ge a)= .

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  6. If a continous random variable f(x)=(k)/(x^(2)+16)-inftyltxltinfty the...

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  7. If f(x)=ae^(-2x)0ltxltinfty is a probability density function of a ran...

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  8. If X is a discrete random variable P(X gta) is equal to

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  9. For a binomial distrubution with mean 2 and variance 4/3 p is equal t...

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  10. If F(x) is a distribution function of a random variable then the false...

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  11. In a binomial distribution if n =5 P(X=3)=2(PX=2)then

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  12. F(X)=(pi)/(2+tan^(-1))(x)/(pi)-inftyltxltinfty is a distribution of a ...

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  13. A discrete random variable X has probability mass function P(x) then

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  14. In a packet of 50 pens 10 are red pens if 5 pen are selected what is t...

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  15. In 12 throw of a die getting 2 or 4 is considered as success then the...

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  16. Given E(X)=10, Var(X)=25 where X is a random variable and Y=aX-b is a...

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  17. The probability distribution of a discrete random variable x is given...

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  18. If mean =0 standard deviation =2 Then E(X^(2)) is

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  19. IfF(x)=(A)/(pi)=(1)/(16+x^(2))-inftyltxltinfty is a pdf of a continous...

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  20. In a binomial distribution with mean 4 and variance 16/5 then p is

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  21. Given E(X+C)=8 and E(X-C)=12 The value of C is

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