Let X, Y be i.i.d. Expo(). Find E|X Y | in two dierent ways: (a) using 2D LOTUS and (b) using the memoryless property without any calculus.

Unit 6 Notes: Government Statistics Week 5: 5 February 2018 Key Terms Key Terms 1. Valid Measurement: a measure of property that is relevant or appropriate as a representation of that property Government statistics What do citizens need from their government statistical agencies o Need data that are accurate and timely and keep...