# Chapter 4

- StudyBlue
- Florida
- Broward Community College
- Chapter 4

**Created:**2014-06-14

**Last Modified:**2014-06-14

EX. roll a die & get a 4.

Event

EX. Roll 2 Dice & receive a sum of 9.

**P(AnB) is the probability BOTH occurred.

*ex. prob. of x being male and female*

P(AUB)= P(A)+P(B)-0

*NO subtraction necessary*

- "and, with, both, all, each, every"

P(AnB)= P(A) x P(B)

P(AnB)= P(A)x P(BIA)

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