The ELISA test was introduced in the mid-1980s to screen blood for the presence of AIDS antibodies. When antibodies are present ELISA is positive 98% of the time; when the blood lacks the antibidies the ELISA is positive 7% of the time. Assuming that 1% of the population has AIDS antibodiesin their blood, what is the probability that a person who tests positive actually has the antibodies in their blood?
Let A represents the event that a person who tests positive, B represent the even that a person actually has the antibodies in their blood. We ...
A probability problem is solved. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.