The random variable X is called double exponentially distributed if its density function is given by f (x) = ce|x| , < x < +. (a) Find the value of c. (b) Prove that E(X2n) = (2n)! and E(X2n+1) = 0.

Chapter 1 Throughout the semester, we will learn methods to address questions such as these. To get started, we need to learn some basic vocabulary. -Subject: entities that we measure in a study -Variable: any characteristic that is observed for the subject in a study -Population: a set of all subjects of interest -Sample: the set of subjects for which we have data **We...