Do extra credit problems entirely on your own. Turn them in separately from regular homework.

• Chapter 1: What is statistics?
  A problem on means (ps) (pdf)
• Chapter 2: Probability
  The sixteenfold way: handout
• Chapter 3: Discrete random variables
  • Let Y have a binomial distribution with parameters p and n. Derive a simple formula for the "r^th factorial moment" of Y, E(Y^r).