6.042 Lecture 7 -- Random Variables and Expectation 14:32:00 Administrivia 14:33:46 Expectation 14:40:24 Expected value of a fair die 14:42:58 Chuck-a-Luck 14:49:44 Analysis of Chuck-a-Luck 14:59:56 Hat check demo 15:03:44 Hat check problem 15:19:47 Linearity of expectation 15:21:02 Sum of two random variables 15:26:49 Back to analysis of hat check 15:35:13 Bar game 15:45:00 Analysis of bar game 15:53:36 End