Find expected value of the random Variable X whose probability mass function is `X=x,1,2,3
P(X=x) 1/5,2/5,2/5`

A discrete random variable X has probability mass function P(x) then

A random varibale x has the following probability mass function P(2 le X lt5)

Find the expected value ,variance and standard deviation of random variable X whose probability mass function (p.m.f.) is given below.

Find the variance and standard deviation of the random variable X whose probability distribution is given below : {:(x,0,1,2,3),(P(X=x),1/8,3/8,3/8,1/8):}

Let X be a random variable with probability distribution. then E(5X-2)= ………. .

If x is the random variable with probability mass function given by f(x)={{:(x+1,1lexlt2),(-x+1,2lexlt3),(0 , "otherwise"):} Find The distrubution function find also

If X is the a random variable with probability mass function P(x) = kx , for x = 1,2,3 = 0 , otherwise then k = ……..

A random variable X has the following probability function: Find P(x <2),P(x ge 2),P(-2 < x le 2)

Which of the following distributions of probability of random variable X are the probability distributions? X : 0 1 2 3 4 P(X): 0.1 0. 5 0. 2 0. 1 0. 1