SOLUTION: 5.2/21 The probability of a randomly selected adult in one country being infected with a certain virus is 0.005. In tests for the virus, blood samples from 28 people are combine
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Question 1147825: 5.2/21 The probability of a randomly selected adult in one country being infected with a certain virus is 0.005. In tests for the virus, blood samples from 28 people are combined. What is the probability that the combined sample tests positive for the virus? Is it unlikely for such a combined sample to test positive? Note that the combined sample tests positive if at least one person has the virus. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! This is the same as 1- probability that NONE has the virus.
that is 1-0.995^27 or 0.1265
It is not at all unlikely that the combined sample may test positive.
