SOLUTION: In a class of 30 students, 16 are democrats, 4 are business majors, and 3 of the business major are democrats. If one student is randomly selected, find the probability of choosing

Question 1195518: In a class of 30 students, 16 are democrats, 4 are business majors, and 3 of the business major are democrats. If one student is randomly selected, find the probability of choosing a Democrat or a business major
Answer by ikleyn(52778) (Show Source): You can put this solution on YOUR website!
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In a class of 30 students, 16 are democrats, 4 are business majors,
and 3 of the business major are democrats. If one student is randomly selected,
find the probability of choosing a Democrat or a business major
~~~~~~~~~~~~~~~

Use the general formula for the probability of union of two events, A and B

    P(A U B) = P(A) + P(B) - P(A ∩ B).


In your case, this formula takes the form

    P(Democrat or a business major) =  +  -  =  = .    ANSWER

Solved and explained.

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