Question

Suppose that 2% of a population carries antibodies to a virus. For a research project, you need 30 people

with antibodies to the virus. How many people should you test so that the expected number of people with
the antibodies is 30?

Answer 1

1500

Explanation:

p = number of people who should be tested

.02p = 30

p = 30/.02

p = 1500