Segment
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Time
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- Collect solutions to Page 5 problems.
- Emphasize that we will use these for comparison
purposes later in the unit (i.e., THEY will compare their earlier
thinking with their current thinking).
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Discuss homework
- Reminder of homework policy
- Questions
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Discuss "Probabilistic situations"
- It is not the situation per se that is or
is not probabilistic. It is the way you imagine it being
that is or is not probabilistic.
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Examples. (PowerPoint) Are the situations
entailed in these statements probabilistic? If not, rephrase the statement
so that it entails a probabilistic situation. (Be open to the possibility
that a statement cannot be so rephrased.
- The probability that the next U.S. Attorney General
is a woman
- The probability that you will be able to read newspapers
more intelligently after this course
- The probability that a it will snow tomorrow
- The probability that (etc.)
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Determining probabilities
- Emprically
- Theoretically
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Toss three coins. What is prob of 2 heads?
- Step 1 rephrase the situation
- Step 2 determine empirically or theoretically
- When determining theoretically, want to determine
in a way that we are assured it will match empirical results.
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Terms
- Experiment
- Outcome
- Sample space
- Event
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Homework
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