Please answer the following question and show all steps:

1. Suppose that it is known that a about 1.5% of the people in a town have the corona virus. A medical test is given with the following properties: If the person does have the Virus, the test will indicate it with a probability .995. If he does not have it, then there is a probability .015 that the test will erroneously indicate that he does. For one randomly selected person, the test shows that he has COVID 19. What is the probability that he really does