SOLUTION: Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 43% were unmarried. If 19% of the women were both unmarried and 30 ove

Algebra ->  Probability-and-statistics -> SOLUTION: Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 43% were unmarried. If 19% of the women were both unmarried and 30 ove      Log On


   

Question 1181989: Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 43% were unmarried. If 19% of the women were both unmarried and 30 over what is the probability that a woman who gave birth at the hospital was over 30 or unmarried?
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
.

Use the general formula for probabilities


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


You have all the values in the right side: they are GIVEN to you.


So, substitute them to the formula


    P(A U B) = 50% + 43% - 19%.


Calculate and get your ANSWER.

Solved.

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To see many other similar  (and different)  problems solved, look into the lesson
    - Using general probability formulas for a union or intersection of events
in this site.

Learn the subject from there.