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A random variable 'X' has the following ...

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

The values of k is

A

`(7)/(81)`

B

`(5)/(81)`

C

`(2)/(81)`

D

`(1)/(81)`

Text Solution

Verified by Experts

The correct Answer is:
D
`therefore sum_(r=0)^(8)P(X=r)=1`
`rArr a+3a+5a+7a+9a+11a+13a+15a+17a=1`
`rArr a=(1)/(81)`
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OBJECTIVE RD SHARMA ENGLISH-DISCRETE PROBABILITY DISTRIBUTIONS-Exercise
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