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Unions and Intersections of Sets

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The union of two events A and B is the event that occurs if either A or B or ... Demo -Union of Two Events. Intersection of Two Events ... – PowerPoint PPT presentation

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Title: Unions and Intersections of Sets


1
Section 3.2
  • Unions and Intersections of Sets

2
Compound Events
  • A compound event is the composition of two or
    more other events. Compound events may be formed
    by the union or the intersection of two events.

3
Union of Two Events
  • The union of two events A and B is the event that
    occurs if either A or B or both occur on the
    performance of the experiment. A U B consists of
    all sample points that are in either A or B or
    both.
  • Demo -Union of Two Events

4
Intersection of Two Events
  • The intersection of two events A and B is the
    event that occurs if both A and B occur on a
    single performance of the experiment. We write
    AnB for the intersection of a and B. AnB
    consists of all sample points that belong to both
    A and B.
  • Demo _Intersection of Two Events

5
Complementary Events
  • The complement of event A is the event that A
    does not occur that is, the event consisting of
    all sample points that are not in A. We denote
    the complement of A as A' or as A
  • Demo of A complement
  • P(A)P(A)1
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