Concept explainers
Figure 3.50 gives the estimated number of diagnoses of AIDS among adults and adolescents in the United States by transmission category through the year 2010.
Transmission Category | Estimated Number of AIDS Cases, through 2010 | ||
Adult and Adolescent Male |
Adult and Adolescent Female |
Total | |
Male-to-male sexual contact | 555, 032 | — | 555, 032 |
Injection drug use | 187, 938 | 89, 800 | 277, 738 |
Male-to-male sexual and injection drug use | 80, 902 | — | 80, 902 |
High-risk heterosexual contact | 77, 521 | 136, 675 | 214, 196 |
Other | 11, 975 | 6, 427 | 18, 402 |
Figure 3.50 AIDS sources.
Includes hemophilia, blood transfusion, perinatal exposure, and risk not reported or not identified.
Source: Centers for Disease Control and Prevention
a. Find the probability that a U.S. adult or adolescent diagnosed with AIDS is male and the probability that a U.S. adult or adolescent diagnosed with AIDS is female.
b. Find the probability that a male U.S. adult or adolescent diagnosed with AIDS was exposed by injection drug use (possibly combined with male-to-male sexual contact) and the probability that a female U.S. adult or adolescent diagnosed with AIDS was exposed by injection drug use.
c. Find the probability that a U.S. adult or adolescent diagnosed with AIDS is male and was exposed by injection drug use (possibly combined with male-to-male sexual contact) and the probability that a U.S. adult or adolescent diagnosed with AIDS is female and was exposed by injection drug use.
d. Find the probability that a male U.S. adult or adolescent diagnosed with AIDS was exposed by heterosexual contact and the probability that a female U.S. adult or adolescent diagnosed with AIDS was exposed by heterosexual contact.
e. Find the probability that a U.S. adult or adolescent diagnosed with AIDS is male and was exposed by heterosexual contact and the probability that a U.S. adult or adolescent diagnosed with AIDS is female and was exposed by heterosexual contact.
f. Explain the difference between parts (b) and (c) and the difference between parts (d) and (c).
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EBK MATHEMATICS: A PRACTICAL ODYSSEY
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt