Solution Found!
Let X be a random variable with PMF ( ) { X 2 la, px x =
Chapter , Problem 16(choose chapter or problem)
Let X be a random variable with PMF ( ) { X 2 la, px x = 0, (a) Find a and E[Xj . if x = -3, -2, - 1, 0, 1, 2, 3, otherwise. (b) What is the PMF of the random variable Z = (X - E[xJ) 2 ? (c) Using the result from part (b), find the variance of X. (d) Find the variance of X using the formula var{X) = L:x (x - E[XJ) 2 px (X).
Questions & Answers
QUESTION:
Let X be a random variable with PMF ( ) { X 2 la, px x = 0, (a) Find a and E[Xj . if x = -3, -2, - 1, 0, 1, 2, 3, otherwise. (b) What is the PMF of the random variable Z = (X - E[xJ) 2 ? (c) Using the result from part (b), find the variance of X. (d) Find the variance of X using the formula var{X) = L:x (x - E[XJ) 2 px (X).
ANSWER:Step 1 of 5
Given that,
Let X be a random variable with PMF