Chapter 6 Section 1 Introduction

Probability of an Event The probability of an event is a number that expresses the long run likelihood that an event occurs. 0 < (‘The probability of an event’) < 1

Probability of an Event II 1.If the probability of an event is close to 0, then the event is less likely to occur. 2.If the probability of an event is close to 0.5, then the event is equally likely to occur as it is not to occur. 3.If the probability of an event is close to 1, then the event is most likely to occur.