Chapter 12# Reading Lecture Video Video Length (minutes) Lecture Notes 12.1a Discrete Random Variables 17 Notes 12.1b Expected Value and Variance (Discrete) 23 Notes 12.2a Continuous Random Variables 37 Notes 12.2b Cumulative Distribution Function 32 Notes 12.3 Expected Value and Variance (Continuous) 32 Notes 12.4a Exponential Random Variables 22 Notes 12.4b Normal Random Variables 29 Notes Z Table Link for the full Z Table used in the Normal Random Variables section.