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Two dice are rolled at random 5 times. O...

Two dice are rolled at random 5 times. Obtain the mean and variance of the distribution of doublets obtained.

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The correct Answer is:
`(5)/(6),(25)/(36)`
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MODERN PUBLICATION-PROBABILITY-EXERCISE 13 (h) (LATQ)
  1. An unbiased coin is tossed 4 times. Find the mean and variance of the ...

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  2. If the mean and variance of a binomial distribution are 18 respctivel...

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  3. If the sum of the mean and variance of a binomial distribution of 18 t...

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  4. If the sum of the mean and variance of a binomial distribution for 5 t...

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  5. The mean and variance of a Binomial variable X are respectively 4 and ...

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  6. If the sum of the mean and variance of a binomial distribution for 5 t...

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  7. Obtain the binomial distribution whose mean is 10 and standard dev...

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  8. Find the binomial distribution whose : (i) mean is 4 and variance is...

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  9. If tow dice are rolled 12 times, obtain the mean and the variance of ...

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  10. A die is thrown 20 times. Getting a number greater than 4 is considere...

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  11. 10 coins are tossed at random. Obtain the mean and variance of the num...

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  12. The sum and product of the mean and variance of a binomial distributio...

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  13. A die is thrown 6 times. Find the mean and variance of the number of a...

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  14. Eight dice are rolled at random. Find the mean and variance of number ...

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  15. Two dice are rolled at random 5 times. Obtain the mean and variance of...

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  16. The mean and variance of a binomial distribution are 4 and 4/3 resp...

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  17. If the sum of mean and variance of a binomial distribution is 4.8 for ...

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  18. A discrete random variable 'X' has mean equal to 3 and variance equal ...

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  19. (a) Determine the binomial distribution whose mean is 10 and variance ...

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  20. The screws produced by a certain machine were checked by examining sam...

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