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State which of the following are not the probability distributions of a random variable. Give reasons for your answer.

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RD SHARMA ENGLISH-MEAN AND VARIANCE OF A RANDOM VARIABLE -All Questions
  1. A coin is tossed until a head appears or the tail appears 4 times in s...

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

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  3. State which of the following are not the probability distributions ...

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  4. Check the following distributions of probability of random variable X ...

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  5. Prove that the following distributions of probability of random vari...

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  6. Which of the following distributions of probability of random variab...

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  7. A random variable X has the following probability distribution: X :\ ...

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

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  9. Let X be a random variable which assumes values x1, x2, x3,\ x4 such t...

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  10. Two cards are drawn from a well shuffled pack of 52 cards. Find the...

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  11. Find the probability distribution of the number of heads when three co...

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  12. Four cards are drawn simultaneously from a well shuffled pack of 52...

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  13. A bag contains 4 red and 6 black balls. Three balls are drawn at ra...

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  14. Five defective mangoes are accidentally mixed with 15 good ones. Four ...

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  15. Two dice are thrown together and the number appearing on them noted. X...

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  16. A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, ...

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  17. Five defective bolts are accidently mixed with twenty good ones. If...

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  18. Tow cards are drawn successively with replacement from a well-shuffled...

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  19. Find the probability distribution of the number of white balls drawn i...

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  20. From a lot containing 25 items, 5 of which are defective, 4 are, cho...

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