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Find the mean and variance of the number of heads in the two tosses of a coin.

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A N EXCEL PUBLICATION-PROBABILITY-QUESTION BANK
  1. A random variabe x has the following probability distribution. Find V...

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  2. A random variabe x has the following probability distribution. P(...

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  3. Find the mean and variance of the number of heads in the two tosses of...

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  4. State whether the following is a probability distribution of a random ...

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  5. State whether the following is a probability distribution of a random ...

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  6. State whether the following is a probability distribution of a random...

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  7. State whether the following is a probability distribution of a random ...

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  8. An urn contains 5 red and 2 black identical balls. Two balls are rando...

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  9. Let X represent the absolute difference between the number of heads an...

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  10. Find the probability distribution of number of heads in two tosses of ...

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  11. Find the probability distribution of number of tails in the simultan...

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  12. Find the probability distribution of number of heads in four tosses ...

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  13. Find the probability distribution of the number of sucesses in two tos...

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  14. Find the probability distribution of the number of sucesses in two tos...

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

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  16. A coin is tossed so that the head is 3 times as likely to occur as tai...

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  17. A random variable X has the following probability distribution Determ...

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  18. A random variable X has the following probability distribution Deter...

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  19. A random variable X has the following probability distribution Deter...

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

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