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Find the probability distribution of a r...

Find the probability distribution of a random variable X which denotes the number of tails in two tosses of a coin.

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PRADEEP PUBLICATION-PROBABILITY-EXERCISE
  1. If a machine is correctly set up, it produces 90% acceptable items. If...

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  2. A girl throws a die. If she gets 5 or 6, tosses a coin three times and...

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  3. Find the probability distribution of a random variable X which denotes...

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  4. Find the mean and variance of the number of heads on the throw of thre...

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  5. A dice is rolled thrice. If getting a four is considered a success, fi...

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  6. Find the probability distribution of the number of successes in two to...

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  7. Two dice are thrown simultaneously. If X denotes the numbers of sixes ...

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  8. Two cards are drawn with replacement from a well shuffled deck of 52 c...

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  9. Two cards are drawn one after the other from a well shuffled pack of 5...

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  10. An urn contains 4 white and 3 red balls. Find the probability distribu...

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  11. Four balls are to be drawn without replacement from a box containing 8...

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  12. Four defective oranges are accidently mixed with 16 good ones and by l...

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  13. A bag contains 2 white , 3 red and 4 blue balls. Two balls are drawn a...

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  14. Calcuate the mean variance and standard deviation of a number obtained...

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  15. Calcuate the mean, variance and standard deviation of number of heads ...

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  16. A die is tossed once. Let a random variable X be defined as X={(0,if t...

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  17. From a lot of 30 bulbs which include 6 defectives, a sample of 4 bulbs...

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  18. A coin is biased so that the head is 3 times as likely to occur as tai...

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  19. Two bad eggs are mixed accidently with 10 good ones. Find the probabil...

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  20. Find the variance of the distribution:

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