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Two cards are drawn simultaneously (or successively without replacement) from a well shuffled pack of 52 cards. Find the mean, variance and standard deviation of the number of kings.

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RD SHARMA ENGLISH-MEAN AND VARIANCE OF A RANDOM VARIABLE -All Questions
  1. A discrete random variable X has the probability distribution given be...

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  2. Find the mean variance and standard deviation of the following prob...

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  3. Two cards are drawn simultaneously (or successively without replace...

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  4. Two bad eggs are accidently mixed up with ten good ones. Three eggs ...

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  5. Pair of fair dice is thrown. Let X be the random variable which denote...

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  6. A fair coin is tossed four times. Let X denote the number of heads ...

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  7. A fair die is tossed. Let X denote twice the number appearing. Find...

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  8. A fair die is tossed. Let X denote 1 or 3 according as an odd or an ev...

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  9. A die is tossed twice. A success is getting an odd number on a rand...

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  10. Three cards are drawn at random (without replacement) from a well shuf...

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  11. An urn contains 5 red 2 black balls. Two balls are randomly drawn, ...

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  12. Two numbers are selected are random (without replacement) from posit...

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  13. Write the values of a for which the following distribution of probabil...

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  14. Find the mean of the following probability distribution: X=xi :\ \ ...

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  15. In a single throw of a dice; if X denotes the number on its upper face...

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  16. If the probability distribution of a random variable X is given by X=x...

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  17. Find the mean of the following probability distribution: X=xi :\ \ 1 \...

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  18. If the probability distribution of a random variable X is as given bel...

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  19. A random variable X has the following probability distribution: X=xi :...

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  20. A random variable X has the following probability distribution: Values...

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