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For the following probability distributi...

For the following probability distribution :

`E(X^(2)) ` is equal to

A

3

B

5

C

7

D

10

Text Solution

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The correct Answer is:
D
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ICSE-PROBABILITY-MULTIPLE CHOICE QUESTIONS
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  2. For the following probability distribution. E(X) is equal to

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  3. For the following probability distribution : E(X^(2)) is equal to

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  4. For a random variable X, E(X) = 3 and E(X^(2))=11 .Then variance of X ...

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  5. A random variable 'X' has the following probability distribution : ...

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  6. A die is rolled thrice . If the event of getting an even number is a...

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  7. A dice is thrown twice , the probability of occuring of 5 atleast once...

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  8. A coin is tossed 10 times . The probability of getting exactly six hea...

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  9. A coin is tossed 4 times . The probability of getting atleast one head...

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  10. Two dice are thrown n times in succession . The probability of obtaini...

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  11. A bag contains 2 white and 4 black balls . A ball is drawn 5 times wit...

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  12. If in a trial the probability of a success is twice the probability of...

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  13. A box contains 20 identical balls of which 10 balls are red . The ball...

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  14. In a series of three trials , the probability of two successes is 9 ti...

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  15. A coin is tossed n times. The probability of getting head atleast once...

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  16. A Box Contains 100 Bulbs Out Of Which 10 Are Defective A Sample Of 5 B...

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  17. A fair coin is tossed n times . If the probability of getting seven he...

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  18. A fair coin is tossed 100 times . The probability of getting head an o...

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  19. For a binomial variate X , if n = 4 and P(X=0) = 16/81 then P(X =4) is

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  20. For a binomial variate X , if n = 3 and P(X =1) = 12 P(X =3) , then th...

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