1. Lesson 53 – Introduction to Probability Math 2 Honors - Santowski

2. (A) Probability of Single Events  Define a formula for probability  Ex 19C; HH book, Q1,4,5,6,8,9 for in class examples  Textbook; S10.1, p633; Q4,6,7,12-19

3. (B) Probability of Compound Events  Compound events means that two (or more) events occurring  (a) Mutually exclusive events  when the two events have NOTHING in common  Example   (b) Inclusive events  when there is some “overlap” or something in common in the 2 events  Example 

4. (C) Notations  p(A)  probability of event A occurring   probability that A WILL NOT happen (referred as the COMPLEMENT of A)   p(both A and B)  probability that BOTH A and B happen  Multiplication Law   p(either A or B)  probability that EITHER A or B happen  Addition Law

5. (D) Probability Rules – Addition Rule  If we have compound events, then we have the following two formulas to work with  (a) for INCLUSIVE events:  (b) for EXCLUSIVE events

6. (E) CW/HW  Classwork  http://clemmerfinite.wikispaces.com/file/view/unit+3+hom ework+_all+in+one_.pdf http://clemmerfinite.wikispaces.com/file/view/unit+3+hom ework+_all+in+one_.pdf  S10.4; p656; Q6-27, 36-41

7. (F) Independent/Dependent Events  If we want to consider the probability of event A AND event B occurring, we must introduce 2 new terms  Two events can be considered INDEPENDENT or DEPENDENT events  If two events are INDEPENDENT, then the occurrence of event A does NOT have an effect on the probability of event B  A does not affect B  EXAMPLES   If two events are DEPENDENT, then the occurrence of event A DOES have an effect on the probability of event B

8. (G) Internet links  http://www.edhelper.com/math/probability6.htm http://www.edhelper.com/math/probability6.htm  http://www.snapdrive.net/files/563396/PROBABILITY/WORKS HEET%205%20Multiply%20Probability.pdf http://www.snapdrive.net/files/563396/PROBABILITY/WORKS HEET%205%20Multiply%20Probability.pdf  http://clemmerfinite.wikispaces.com/file/view/unit+3+homewor k+_all+in+one_.pdf http://clemmerfinite.wikispaces.com/file/view/unit+3+homewor k+_all+in+one_.pdf  http://edhelper.com/probability.htm http://edhelper.com/probability.htm  http://www.worksheetworks.com/pdf/b9f/992c3d31a750/Work sheetWorks_Independent_Compound_Events_1.pdf http://www.worksheetworks.com/pdf/b9f/992c3d31a750/Work sheetWorks_Independent_Compound_Events_1.pdf  http://www.mathgoodies.com/lessons/vol6/independent_events.html http://www.mathgoodies.com/lessons/vol6/independent_events.html  http://www.tutorvista.com/q/probability-independent-&- dependent-events/87000/ http://www.tutorvista.com/q/probability-independent-&- dependent-events/87000/