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If two cards are drawn at random from a ...

If two cards are drawn at random from a desk of cards, and X be the number of aces obtained, what is E(X) ?

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MBD PUBLICATION-THREE DIMENSIONAL GEOMETRY-QUESTION BANK
  1. If a die is rolled twice and X is the sum of scores obtained is greate...

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  2. If X be a random variable which takes the values 0,1,2,…… with probabi...

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  3. If {0.1,0.2,c,0.5} determines a probability distribution, find c.

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  4. An unbiased die is thrown twice. What is the probability distribution ...

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  5. A fair coin is tossed repeatedly. If tails appear on first four tosses...

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  6. If two cards are drawn at random from a desk of cards, and X be the nu...

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  7. What is the variance of X, given as follows : For the given data :

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  8. A die is thrown 5 times. If getting an even number is a success, what ...

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  9. The standard deviation of a binomial distribution (p+q)^16 is 2. Find ...

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  10. The maximum value of variance in binomial distribution with parameter...

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  11. A binomial distribution has mean 5 and variance 4. Find the number of ...

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  12. A die is thrown 15 times. Getting a number greater than 5 is a success...

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  13. The probability of an event happening in one trial of an ecperiment is...

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  14. Two dice are tossed 6 times. Find the probability that 7 will show an ...

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  15. If X-following a Binomial distribution with parameter n=6 and p, and i...

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  16. A cartoon contains 20 bulbs, 5 of which are defective. Find the proba...

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  17. An unbiased coin is tossed n times. Let X denote the number of times ...

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  18. An experiment succeede twice as often as it fails. Find the probabilit...

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  19. Find the expectation of the number of tails in 15 tosses of a coin.

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  20. If the sum of the mean and the variance of a binomial distribution for...

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