9/26/2012

Chapter 4

• Properties of expected value
• Expected value of sums of random variables
• Expectation of a function of a random variable - E(g(x))
• Variance
• Bernoulli and Binomial random variables - class exercises
• Poisson random variable
• Hypergeometric random variable
• Negative binomial random variable
• Properties of the cumulative distribution function (c.d.f.)

We will have a problem session on Friday