Question

If x is a discrete random variable with the probabilities pi , then the expected value of x2 is ________ Fill in the blank.

Answer 1

Hi ,

If the range of discrete random variable X

is { x1 , x2 , ..., xn } and P( X = xn ) = Pn for

every positive integer n is given

summetion of ( x² n Pn ) = E( x² ) known as

expected of x².

I hope this helps you.

Answer 2

for solution refer attachment