1) You are told about a drug that reduces heart attack risks for people in the age group of your parents.
It costs $5000 per year.
How likely are you to recommend it to your parents if it reduces heart attack deaths by 50% per year?
A) recommend it
C) oppose it
2) This question addresses false-positive rates for an HIV test.
We want to know the chance you actually have HIV given a positive test result.
You are given the following averages for people in your age-risk group:
1% are infected
99% are not infected
95% is the chance of testing positive if you are infected by HIV
2% is the chance of testing positive if you are not infected with HIV
If you get a positive lab test, the chance that you HAVE HIV is nearly
D) 2/3 (67%)
E) 1/3 (33%)