**Learning objectives**

- Work with probability density functions for one and two random variables
- Calculate probabiliites from density functions by integrating
- Use the relationship between pdfs and cdfs for 1-variable probability distributions
- Calculate expected values from probability density functions

**Before class**

- Read Hughes-Hallett section 16.6
- Ponder Hughes-Hallett problems: 16.6: 17, 18, 19, 22.

**In class**

- Probability problems
- More on probability with Mathematica