COMM 217 Chapter 4: CHAPTER 4 - INTRODUCTION TO PROBABILITY.docx

• School: Concordia University
• Department: Commerce
• Course: COMM 217
• Professor: Fassil Nebebe

Document Summary

Learning objectives: understand the three approaches to assessing probabilities, be able to apply the addition rule, know how to use the multiplication rule. Probability: the chance that a particular event will occur, the probability value will be in the range of 0 to 1. A process that produces a single outcome whose result cannot be predicted with certainty. The collection of all outcomes that can result from a selection, decision, or experiment: example #1: all 6 faces of a die, example #2: all 52 cards of a deck of cards. The item of interest is the product sold. Step 2: define the outcomes for one trial of the experiment. Outcomes: e1 hamburger, e2 cheeseburger, e3 bacon burger. For single sale: ss = (e1, e2, e3) If experiment includes two sales, there will be nine outcomes. Ss = {o1, o2, o3, o4, o5, o6, o7, o8, o9} o1 = {e1, e1}, o2={e1, e2}, o3={e1, e3}, o4={e2, e1}, .