ose that a new screening test is proposed for the detection of fracture. The prevalence of fracture in the general population is known to be 10%. The test has been investigated in fracture subjects and was found to give positive result in 70% of such cases (sensitivity). When given to subjects without fracture, the test yielded a positive result of 20%. a) What is the proportion (probability) of subjects will actually be found to have fracture with positive test? b) What is the proportion (probability) of subjects will be found to have without fracture with positive test? c) What is the overall rate of positive test result?
ose that a new screening test is proposed for the detection of fracture. The prevalence of fracture in the general population is known to be 10%. The test has been investigated in fracture subjects and was found to give positive result in 70% of such cases (sensitivity). When given to subjects without fracture, the test yielded a positive result of 20%. a) What is the proportion (probability) of subjects will actually be found to have fracture with positive test? b) What is the proportion (probability) of subjects will be found to have without fracture with positive test? c) What is the overall rate of positive test result?
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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Suppose that a new screening test is proposed for the detection of fracture. The prevalence of fracture
in the general population is known to be 10%. The test has been investigated in fracture subjects and
was found to give positive result in 70% of such cases (sensitivity). When given to subjects without
fracture, the test yielded a positive result of 20%.
a) What is the proportion (
positive test?
b) What is the proportion (probability) of subjects will be found to have without fracture with
positive test?
c) What is the overall rate of positive test result?
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