1. Statistics of Transportation safety by Courtney Quarles

2. What is Probability? Two types of Probability: -Theoretical probability -Empirical probability Theoretical Probability: Applies to situations in which the sample space only contains equally likely outcomes, all of which are known. Empirical Probability: Applies to situations on which we observe the frequency of occurrence of an event.

3. Words to know Experiment: Any occurrence for which the outcome is uncertain, denoted by E. Sample space: The set of all possible outcomes of an experiment, denoted by S. Computing Empirical Probability The empirical probability of event E is P(E) = Observed number of times E occurs Total number of observed occurrences

4. Probability of an Event Not Occurring The Probability of an event not occurring The probability that an event E will not occur is equal to 1 minus the probability that it will occur. P(not) = 1 - P(E)

5. Or Probabilities with Mutually Exclusive Events Mutually Exclusive events If it is impossible for events A and B to occur simultaneously, the events are said to be mutually exclusive. Or Probabilities with mutually Exclusive Events If A and B are mutually exclusive events, then P (A or B) = P(A) + P(B)

6. What is the probability of not dying on an airplane? P (not) = 1 - P(E) P (not dying in airplane) = 1- P (not dying in airplane) P = 1 - (1/11,000,000) P = 0.9999999091

7. What is the probability of not dying on a Motorcycle? P (not) = 1 - P(E) P (not dying in motorcycle) = 1 – P (not dying in motorcycle) P = 1 – (1/1020) P = 0.9990196078

8. What is the probability of not getting struck by a metro bus? P(not) = 1 - P(E) P(not dying bicycling accident) = 1 - P(not dying in bicycle accident ) P = 1 – (1/4919) P = 0.9997967066

9. What is the probability of dying on the subway metro bus? P (not) = 1 - P(E) P (not dying on the subway) = 1- P (not dying on the subway)

10. What is the probability of dying in a Motor vehicle? P (not) = 1 - P(E) P (not dying in motor vehicle accident) = 1- P (not dying in motor vehicle accident) P = 1 - (1/84) P = 0.9880952381

11. Works Cited Odds of Dying in Plane Crash. 2009. 6 December 2009. <http://www.rc-trucks.org/odds-of-dying-in-plane-crash.htm> Britt, Robert Roy. “The Odds of Dying.” 2009. 5 December 2009. <http://www.livescience.com/environment/050106_odds_of_dying.html> Kebabjian, Richard. “Plane crash Info.” 2009. http://www.planecrashinfo.com/cause.htm Bureau Of Transportation Statistics. 2009. 6 December 2009. <http://www.bts.gov/publications/national_transportation_statistics/html/table_02_01.html>