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Next: Conditional Probability and Independence Up: Some Set Theory Previous: Notation

Unions and Intersections

  1. A and B are mutually exclusive if

    displaymath3161

    i.e., A and B can't happen at the same time.

  2. A and B are (collectively) exhaustive if

    displaymath3171

    i.e., A and/or B must occur every time the experiment is run.

  3. For any A and B,

    displaymath3181

    If A and B are mutually exclusive,

    displaymath3187

  4. tex2html_wrap_inline3189 .

Jan Lethen
Wed Nov 13 16:20:46 CST 1996