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A random variable has the following prob...

A random variable has the following probability distribution
The value of p is

A

`1//10`

B

`-1`

C

`-1//10`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Since the given distribution is a probability distribution
`therefore" "0+2p+2p+3p+p^2+2p^2+7p^2+2p=1`
`rArr" "10p^2+9p-1=0`
`rArr" "(10p-1)(p+1)=0`
`rArr" "p=1//10" "[thereforep+1 ne 0]`
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