# Question: Find an expression for the m th moment of an

Find an expression for the m th moment of an Erlang random variable whose PDF is given by

for some positive integer n and positive constant b.

for some positive integer n and positive constant b.

**View Solution:**## Answer to relevant Questions

Find an expression for the even moments of a Rayleigh random variable. That is, find E [Y2m] for any positive integer m if the random variable, Y , has a PDF given by Suppose X is a random variable whose n th moment is gn, n = 1, 2, 3… In terms of the gn, find an expression for E [eX]. Let X be a random variable with E[X] = 1 and var(X) = 4. Find the following: (a) E [2X – 4]; (b) E[X2]; (c) E [(2X – 4) 2]. An exponential random variable has a PDF given by fX(x) = exp (– x) u (x) . (a) Find the mean and variance of X. (b) Find the conditional mean and the conditional variance given that X > 1 Let X be a Gaussian random variable with zero mean and arbitrary variance, σ2. Given the transformation Y= X3, find fY (y).Post your question