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The probability distribution of a random...

The probability distribution of a random variable X is given below:
`{:(X=x,0,1,2,3),(P(X=x),(1)/(10),(2)/(10),(3)/(10),(4)/(10)):}`
Then the variance of X is

A

1

B

2

C

3

D

4

Text Solution

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-THEORETICAL DISTRIBUTIONS-EXERCISE 1 (CHOOSE THE CORRECT ANSWER FROM THE ALTERNATIVE 1,2,3 OR 4 GIVEN )
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  2. The probability distribution of a random variable X is given by {:(X...

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  3. The probability distribution of a random variable X is given below: ...

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  4. If m and sigma^(2) are the mean and variance of the random variable X,...

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  5. X is a random variable with distribution given below {:(x:,0,1,2,3),...

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  6. A random variable X has the probability distribution given below. Its ...

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  7. A random variable X follows the following distribution {:(X=x(i):,0,...

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  8. A random variable X has the following distribution {:(X=x(1):,-2,-1,...

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  9. A random variable X has the following distribution {:(x,:-3,-2,-1,0,...

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  10. The random variable takes the values 1,2,3,…….m. If P(X=n)=(1)/(m) to ...

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  11. A randomm variable X takes the value -1,0,1. It's mean is 0.6. If (X=0...

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  12. Let X denote the profit of a business man. The probability of getting ...

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  13. For a dealer in a consignment of umbrellas , the probabilty of getting...

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  14. A box contains 6 tickets. Two of the tickets carry a price of Rs. 5//-...

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  15. A random variable X has the probability distribution: {:(X:,1,2,3,4,...

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  16. The probability of getting exactly 2 heads when tossing 7 coins is

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  17. A coin is tossed 3 times. The probability of getting head once and tai...

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  18. If X is the number of heads getting when five coins are tossed, then m...

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  19. If X is the number of heads getting when 8 coins are tossed , then mea...

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  20. If X is the number on the die , when a die is rolled, then mean and st...

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