Chapter 3 formulas

Chapter 3 formulas - Formulas Chapter Three: Probability...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Formulas Chapter Three: Probability Randall Miller 1 | Page Key Symbols o S Sample Space (collection of all sample points) o { } : 1, 2 A Set of sample points in event A o ( ) PA Probability of event A o AB ∪→ Union of events A and B (either A or B occur) o ∩→ Intersection of events A and B (both A and B occur) o c A Compliment of A (event A does not occur) o | Event A occurs, given that event B occurs o N n N C n  =   Number of combinations of N elements taken n at a time o ! N N factorial = ( )( ) ( )( ) 1 2 ... 2 1 NN N −− Formulas Probability Rules for Sample Points Let p 1 represent the probability of sample i 1. All sample point probabilities must lie between 0 and 1 (i.e., 01 i p ≤≤ ) 2. The probabilities of all the sample points within a sample space must sum to 1 (i.e., 1 1 n i i p = = ) Rules of Complements The sum of the probabilities of complementary events equals 1; that is, ( ) ( ) ( ) ( ) 1 1 c c PA PA += ⇒= Additive Rule of Probability The probability of the union of events A and
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chapter 3 formulas - Formulas Chapter Three: Probability...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online