Maths-
SAT
Easy

Question

A psychologist studied how employees at a large company prefer to work. The psychologist surveyed 3 group of employees. The result are summarized in the table.

If a surveyed employee who prefers to work on a team is chosen at random, what is the probability of selecting an employee from group A or group B?

  1. 0.20
  2. 0.25
  3. 0.30
  4. 0.75

The correct answer is: 0.75


    Total amount of people who prefer to work an team = 20.
    In that total, people from group A and B are 4 and 11 respectively. Question asked group A ‘’or’’ B so both people are fine
    text  Pr obability  end text equals fraction numerator text  Desired events  end text over denominator text  Total events  end text end fraction equals fraction numerator 11 plus 4 over denominator 20 end fraction equals 0.75
    So, option D is correct.

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