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Pergunta em ingles.


  1. This is correct. Since the events “belongs to Middle Class” and “belongs to Upper Class” are disjoint, P(Middle or Upper)=P(Middle)+P(Upper)=.50+.21=.71

  2. Apply probability rules in order to find the likelihood of an event
  3. "Fill in the blank" question: select the correct answer.
  4. Two U.S. adults are chosen at random.Let A be the event that the first adult belongs to the Middle ClassLet B be the event that the second adult belongs to the Lower class.
  5. Complete the following sentences:
  6. Events A and B are
  7. .Events A and B are

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