Chapter 11 Summary-Probability

Chapter 11 Summary-Probability

1. 11-01 Sample Spaces

   • PROBABILITY
     • A chance of occurring
     • Can be:
       • A decimal
         • A fraction
           • A percentage
   • EXPERIMENT
     • Is a situation involving chance that leads to results called outcomes
   • TRIAL
     • Is one go or run of the experiment
   • SAMPLE SPACE
     • Is the set of all possible outcomes
   • RANDOM EXPERIMENT
     • Every possible outcome has the same chance of occurring (otherwise the experiment is said to be biased)
   • In curvy BRACKETS

2. 11-02 Probability

   • P (E)
     • = (number of favourable outcomes) / (total number of outcomes)

3. 11-03 The range of probability

4. 11-04 Experimental Probability

   • EXPERIEMENTAL PROBABILITY
     • Is calculated based on the result of the experiment
   • THEORETICAL PROBABILITY
     • Theoretical probability is calculated to try predict what the result will be ( experiment has not occurred yet.)
   • P (E)
     • = (number of times that events have happened) / (total number of trials)

5. 11-05 Complementary Events

   • COMPLEMENTARY EVENTS
     • Are opposite events
       • events + it's complement = all possible evnts
   • P (not E) = 1 - P(event)

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