SOLUTION: Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 45% were unmarried. If 55% of the women were over 30 or unmarried (o

Question 734286: Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 45% were unmarried. If 55% of the women were over 30 or unmarried (or both), what is the probability that a woman who gave birth at the hospital was both unmarried and over 30?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 45% were unmarried. If 55% of the women were over 30 or unmarried (or both), what is the probability that a woman who gave birth at the hospital was both unmarried and over 30?
--------------------------------
P(married AND >30) = P(married)+P(>30) - P(married OR >30)
---
= 0.45 + 0.50 - 0.55
---
= 0.40
===================
Cheers,
Stan H.
=============
RELATED QUESTIONS
Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 (answered by ikleyn)

Suppose that 53% of the women who gave birth at a certain hospital last year were over 30 (answered by stanbon)

Suppose that 48% of the women who gave birth at a certain hospital last year were over 30 (answered by stanbon)

Suppose that 51% of the women who gave birth at a certain hospital last year were over... (answered by stanbon)

Suppose that % of the women who gave birth at a certain hospital last year were over... (answered by stanbon)

Suppose that 63% of the women who gave birth at a certain hospital last year were over 30 (answered by robertb)

In a study by the Department of Transportation, there were a total of 115 drivers that... (answered by ikleyn)

Where people turn to for news is different for various age groups.Suppose that a study... (answered by Theo)

The lengths of the babies born in city hospital in the last year are normally... (answered by stanbon)