event subset sample space probability
That is, the probability function f(x) lies between zero and one for every value of x in the sample space Ω, and the sum of f(x) over all values x in the sample space Ω is equal to 1. An event is defined as any subset 



E



{\displaystyle E\,}

 of the sample space 



Ω



{\displaystyle \Omega \,}

. The probability of the event 



E



{\displaystyle E\,}

 is defined as
