MATH 154 Study Guide - Midterm Guide: Probability Mass Function, Random Variable, Fair Coin
Document Summary
With regards to answering these problems, imagine that you are writing an answer to teach someone else in the class how to do the problem. In particular, you must give a complete outline for how you arrived at your answer. It is not su cient to simply state a number or formula without providing the steps and reasoning that you used to produce the answer. Theoretical problems (1) let x be a discrete random variable. 0. (2) let a and b be events in a probability space and let ia and. Give a formula for cov(ia, ib) in terms of probability of events (i. e. it should not mention any random variable). (3) let x be a poisson random variable with parameter . Show that var(x) = . (4) let x0, x1, x2, . be a sequence of discrete random variables.
