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The probability distribution of a random...

The probability distribution of a random variable X is given as
Then, the value of p is

A

`1/(72)`

B

`3/(73)`

C

`5/(72)`

D

`1/(74)`

Text Solution

Verified by Experts

The correct Answer is:
A
Sum of probabilities = 1
`rArr" "p+2p+3p+4p+5p+7p+8p+9p+10p+11p+12p=1`
`rArr" "72p=1rArrp=1/(72)`
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Knowledge Check

  • The probability distribution of a discrete random variable X is given below The value of k is

    A
    8
    B
    16
    C
    32
    D
    48

  • The probability distribution of a random variable X is given as follows: If E(X)=2.3 , then value of k is

    A
    `1//2`
    B
    `5//4`
    C
    3
    D
    2
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