Posts by author gpdawson

Deadly Disease

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There is a rare but very serious disease which is usually fatal for those who contract it. It is known to affect about 1 person out of every 100,000.

However, a recently developed test is 99% accurate at determining whether or not an individual has it.

You take the test, and it returns a positive result to the existence of the disease.

What is the probability that you do actually have the disease?