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In a class of 50 students, 31 are Democrats, 13 are business majors, and 3 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.

  • statistics - ,

    31 + 13 + 3 ≠ 50

    What about the remaining 3 students?

    13/50 = business major

    31/50 = Democrats

    Either-or probabilities are found by adding probabilities of individual events.

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