A random variable X has the following distribution
`{:(x:,1,2,3,4),(P(X=x):,0.1,0.2,0.3,0.4):}`
Then its mean is

A random variable X has the following distribution {:(x,1,2,3,4),(P(X=x),c,2c,3c,4c):} The value of c is

A random varibale X has the following probability distribution. {:(X:,1,2,3,4,5),(P(X):,0,0.1,0.2,0.3,0.4):} The mean and standard deviation of X are respectively.

A random varibale X has the following probability distribution. {:(X:,1,2,3,4,5),(P(X):,0,0.1,0.2,0.3,0.4):} Find the mean.

A random variable X has the following probability distribution {:(X=x_(1),1,2,3,4),(P(X=x_(1)),0.1,0.2,0.3,0.4):} The mean and the standard deviation are, respectively a)3 and 2 b)3 and 1 c)3 and sqrt(3) d)2 and 1

A random variable x has the following distribution . {:(x,1,2,3,4),(f(x),k,2k,4k,3k):} Then its mean is :

A random variable X has the following distribution. {:(x,1,2,3,4),(p(X=x),c,2c,3c,4c):} then the value of c is …………… .

A random variable X has the following distribution {:(X=x_(1):,-2,-1,0,1,2,3),(P(X=x_(1)):,0.1,k,0.2,2k,0.3,k):} The value of k and its mean and variance are

A random variable X has the following distribution {:(X=x_(1):,-2,-1,0,1,2,3),(P(X=x_(1)):,0.1,k,0.2,2k,0.3,k):} The value of k and its mean and variance are

A random variable X is specified by the following distribution law : {:(x,2,3,4),(P(X=x),0.3,0.4,0.3):} Then the variance of this distribution is :

A random variable X has the following distribution {:(x,1,2,3,4),(P(X=x),c,2c,3c,4c):} Match the following . {:(I.,c=," "(a)1),(II.,"Mean"=," (b)0.1"),(III.,"Variance"=," (c)3"):}