The probability distribution of a random...

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

Find the value of k, mean, also find variance of X.

Answer

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If the probability distribution of a random variable X is given by

`3`

`9/4`

`3/2`

`3/4`

The distribution of a random variable X is given below Then, the standard deviation of X is

`3/2`

The probability distribution of a random variable X is given below, then k= {:(X=x,1,2,3,4),(P(X=x),k,4k,4k,k):}

`0.1`

`0.2`

`0.3`

`0.4`