Question

Suppose a biotech company just produced a convenient test for Coronavirus that can be administered with a small droplet of blood from a person. The test can give results instantly. The test detects Coronavirus 98% of the time. But the test also gives a false positive 1% of the time. CDC knows that 4% of people have Coronavirus infection. What is the probability that the test correctly identifies someone as negative if the person actually does not have infection?

A.) 0.98

B.) 0.01

C.) 0.02

D. 0.99

E.) 0.197

Answer 1