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Two dice are thrown simultaneously. If X...

Two dice are thrown simultaneously. If X denotes the number of sixes, Find expectation of X. Also find the variance.

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A N EXCEL PUBLICATION-PROBABILITY-QUESTION BANK
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  2. Find the mean number of heads in three tosses of a fair coin.

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  3. Two dice are thrown simultaneously. If X denotes the number of sixes, ...

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  4. Two numbers are selected at random (without replacement) from the firs...

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  7. In a meeting, 70 % of the members favour and 30 % oppose a certain pro...

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  8. Choose the corréct answer in each of the following The mean of the num...

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  9. Suppose that two cards are drawn at random from a deck of cards. Let ...

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  10. A box contains 5 white, 7 red and 8 black balls. If four balls are dra...

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  11. A box contains 5 white, 7 red and 8 black balls. If four balls are dra...

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  12. A die is tossed thrice. Getting an even number is considered as succes...

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  13. Find the binomial distribution for which the mean is 4 and variance 3....

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  14. A die is thrown 6 times. If getting an odd number is a success, what i...

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  15. A die is thrown 6 times. If getting an odd number is a success, what i...

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  16. A die is thrown 6 times. If getting an odd number is a success, what i...

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  17. A pair of dice is thrown 4 times. If getting a doublet is considered a...

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  18. There are 5% defective items in a large bulk of items. What is the pro...

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  19. Five cards are drawn successively with a replacement from a pack of 52...

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