- Describe and find conditional probabilities.
- Understand the concept of independent events.
How Accurate are Pregnancy Tests?
Planned Parenthood stated that “The pregnancy tests you get at the drugstore work 99 out of 100 times. They’re just as accurate as a urine pregnancy test that you’d get at a doctor’s office. Pregnancy tests work by checking your urine (pee) for a hormone called human chorionic gonadotropin (HCG). Your body only makes this hormone if you’re pregnant.”[1]
We can calculate conditional probability as [latex]P(A|B)=\frac{P(A \text{ and }B)}{P(B)}[/latex]
- https://www.plannedparenthood.org/learn/pregnancy/pregnancy-tests#:~:text=The%20pregnancy%20tests%20you%20get,hormone%20if%20you're%20pregnant. ↵