Composite Sampling. Exercises 41 and 42 involve the method
Chapter 5, Problem 41(choose chapter or problem)
Composite Sampling. Exercises 41 and 42 involve the method of composite sampling,whereby a medical testing laboratory saves time and money by combining blood samplesfor tests so that only one test is conducted for several people. A combined sample testspositive if at least one person has the disease. If a combined sample tests positive, thenindividual blood tests are used to identify the individual with the disease. HIV The probability of a randomly selected adult in the United States being infectedwith the human immunodeficiency virus (HIV) is 0.006 (based on data from the KaiserFamily Foundation). In tests for HIV, blood samples from 24 people are combined. Whatis the probability that the combined sample tests positive for HIV? Is it unlikely for such acombined sample to test positive?
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