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The probability distribution of a random...

The probability distribution of a random variable X is given below. Then its mean is
`{:(X=x_(1),1,2,3),(P(X=x_(1)),1//4,1//8,5//8):}`

A

`19//8`

B

`5//4`

C

1

D

`4//5`

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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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