FASTPlaqueTB is a diagnostic test for the presence of tuberculosis bacilli. In a community, for those subjects known to have the tuberculosis bacilli, the FASTPlaqueTB test was positive 70% of the time. For those subjects known not to have the tuberculosis bacilli, the FASTPlaqueTB test was negative 99% of the time. Statistics indicate that about 14.2% of the people in the community have the tuberculosis bacilli. Define all the events, draw a tree diagram, and answer the following two questions. (a). What is the probability that a randomly selected person from the community will have a positive FASTPlaqueTB test result? (b). What is the probability that a person from the community who tests positive does not have tuberculosis bacilli?

FASTPlaqueTB is a diagnostic test for the presence of tuberculosis bacilli. In a community, for those subjects known to have the tuberculosis bacilli, the FASTPlaqueTB test was positive 70% of the time. For those subjects known not to have the tuberculosis bacilli, the FASTPlaqueTB test was negative 99% of the time. Statistics indicate that about 14.2% of the people in the community have the tuberculosis bacilli. Define all the events, draw a tree diagram, and answer the following two questions. (a). What is the probability that a randomly selected person from the community will have a positive FASTPlaqueTB test result? (b). What is the probability that a person from the community who tests positive does not have tuberculosis bacilli?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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When neither the subject nor those having contact with the subject know the treatment assignment, the study is called unbiased. double-blind. blind. statistically significant. randomized.
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