*3.71 What is the specificity of the test?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Please answer 3.71 only.

Transcribed Image Text:Suppose the self-reports are completely accurate and are
representative of the number of eighth-grade students who
smoke in the general community. We are considering using
an SCN level 2 100 µg/mL as a test criterion for identifying
cigarette smokers. Regard a student as positive if he or she
smokes one or more cigarettes per week.
*3.68 What is the sensitivity of the test for light-smoking
students (students who smoke ≤ 14 cigarettes per week)?
*3.69 What is the sensitivity of the test for moderate-smoking
students (students who smoke 15-44 cigarettes per week)?
*3.70 What is the sensitivity of the test for heavy-smoking
students (students who smoke ≥ 45 cigarettes per week)?
*3.71 What is the specificity of the test?
*3.72 What is the PV of the test?
*3.73 What is the PV- of the test?

Transcribed Image Text:TABLE 3.10
Self-reported
cigarettes smoked
in past week
None
1-4
5-14
15-24
25-44
45+
Relationship between SCN levels and
self-reported cigarettes smoked per week
Number of
students
1163
70
30
27
19
23
Percent with
SCN100 µg/mL
3.3
4.3
6.7
29.6
36.8
65.2
Source: Based on the American Journal of Public Health, 71(12), 1320, 1981.
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