[" 3.If the standard deviation of the random variable "X" is "sqrt(3pq)" and mean is "3p],[" then "E(x^(2))=......]

If standard deviation of a ravdom variable x is 2 then var(5x) is

The mean and standard deviation of random variable X are 10 and 5 respectively, then E((X-15)/(5))^(2)= ____

The mean and standard deviation of a random variable X are given by E(X) = 5 and sigma_(x)=3 respectively, then (1) E(X^(2))=……. (2) E[(3X-2)^(2)]= ………. (3) V(3-2X)= …………

The mean and standard deviation of random variable X are 10 and 5 respectively, then E((X-15)/5)^(2) = ________.

The mean and standard deviation of random variable X are 10 and 5 respectively, then E((X-15)/5)^(2) = ________.

If mean =0 standard deviation =2 Then E(X^(2)) is

The standard deviationof a variable x is 10.Then the standard deviation of 50+5x is :

For the random variable X , if V(X) = 4 , E(X) = 3 , then E(X^(2)) is …

If the variance of the random variable X is 5 ,then variance of the random variable -3X is