A random variable X has the following distribution
`{:(x,:-3,-2,-1,0,1,2,3),(P(X=x):,0.05,0.1,0.3,0,0.3,0.15,0.1):}`
The mean and variance are

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=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

Select and write the correct answer from the given alternatives in each of the following : A random variable X has the following probability distribution : {:(X=x,-2,-1,0,1,2,3),(P(x),0.1,0.1,0.2,0.2,0.3,0.1):} Then E(x) = ………

A random variable X follows the following distribution {:(X=x_(i):,0,1,2,3),(P(X=x_(i)):,2//6,3//6,0//6,1//6,):} The mean and the variance are

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 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 variable has the following distribution. {:(x=x_(i),,-3,,-2,,-1,,0,,1,,2),(P(x=x_(i)),,0.1,,2K,,3K,,7K,,0.2,,0.1):} Then for the values, A = K, B = Mean, C = Variance, the ascending order is

A random variable has the following distribution. {:(x=x_(i),,-3,,-2,,-1,,0,,1,,2),(P(x=x_(i)),,0.1,,2K,,3K,,7K,,0.2,,0.1):} Then for the values, A = K, B = Mean, C = Variance, the ascending order is

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