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A random variable has the following prob...

A random variable has the following probability dustribution.
`{:(x:,0,1,2,3,4,5,6,7),(p(x):,0,2p,2p,3p,p^2,2p^2,7p^2,2p):}`
The value of p, is

A

`1//10`

B

`-1`

C

`-1//10`

D

none of these

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The correct Answer is:
A
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OBJECTIVE RD SHARMA-DISCRETE PROBABILITY DISTRIBUTIONS-Exercise
  1. A random variable has the following probability dustribution. {:(x:,...

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  2. If X is a random -variable with distribution given below : {:(x:,0,1...

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  3. If in a distribution each x is replaced by corresponding value of f(x)...

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  4. A man takes a step forward with probability 0.4 &amp; backward with pr...

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  5. The probability that a man can hit a target is 3//4. He tries 5 times....

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  6. Six ordinary dice are rolled. The probability that at least half of th...

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  7. Two persons each make a single throw with a pair of dice. The probabil...

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  8. If the range ot a random vaniabie X is 0,1,2,3, at P(X=K)=((K+1)/3^k) ...

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  9. An experiment succeeds twice as often as it fails. Find the probabi...

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  10. The probability that a candidate secure a seat in Engineering through ...

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  11. Six coins are tossed simultaneously. The probability of getting at lea...

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  12. Fifteen coupens are numbered 1,2,3,...15 respectively. Seven coupons a...

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  13. Two players toss 4 coins each. The probability that they both obtain ...

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  14. A box contains 24 identical balls of which 12 are white and 12 are ...

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  15. Two dice are tossed 6 times. Then the probability that 7 will show an ...

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  16. If X follows a binomial distribution with parameters n=6 and p. If 4(P...

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  17. The number of times a die must be tossed to obtain a 6 at least one wi...

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  18. Seven chits are numbered 1 to 7. Four chits are drawn one by one with ...

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  19. If the mean of a binomial distribution is 25, then its standard deviat...

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  20. The value of C for which P(X=k)=Ck^2 can serve as the probability func...

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