# Question

Find the mean of the random variables described by each of the following cumulative distribution functions:

(a)

(b)

(c)

(d)

(a)

(b)

(c)

(d)

## Answer to relevant Questions

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 Suppose X is a random variable with an exponential PDF of the form fX(x) = 2e– 2xu(x). A new random variable is created according to the transformation Y = 1 – X. (a) Find the domain for X and Y. (b) Find fY(y) A Gaussian random variable with zero mean and variance σ2X is applied to a device that has only two possible outputs, 0 or 1. The output 0 occurs when the input is negative, and the output 1 occurs when the input is ...For some integer and constant , two discrete random variables have a joint PMF given by (a) Find the value of the constant in terms of L. (b) Find the marginal PMFs, P M (m) and PN (n). (c) Find Pr (M + N < L / 2). A pair of random variables has a joint PDF specified by (a) Find the marginal PDFs, fX (x) and fY(Y). (b) Based on the results of part (a), find E [X], E [y], Var (X), and Var (Y). (c) Find the conditional PDF, f X|Y ...Post your question

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