Polygraph tests (lie-detector tests) are often routinely administered to employees or prospective employees in sensitive positions. A polygraph test will label subjects + (positive) if it determines the subject is lying and - (negative) if it determines the subject is not lying. Subjects can either be lying or not lying (truthful). According to studies of polygraph reliability, the probability that the polygraph will test + (positive) given/conditional that the subject is actually lying is 0.88. The probability that the polygraph will test - (negative) given the subject is telling the truth (not lying) is 0.84. Assume that 90% chance a subject is telling the truth (10% chance of lying).
Polygraph tests (lie-detector tests) are often routinely administered to employees or prospective employees in sensitive positions. A polygraph test will label subjects + (positive) if it determines the subject is lying and - (negative) if it determines the subject is not lying. Subjects can either be lying or not lying (truthful). According to studies of polygraph reliability, the probability that the polygraph will test + (positive) given/conditional that the subject is actually lying is 0.88. The probability that the polygraph will test - (negative) given the subject is telling the truth (not lying) is 0.84. Assume that 90% chance a subject is telling the truth (10% chance of lying).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Say the polygraph test labels someone + (positive). What is the
Transcribed Image Text:Polygraph tests (lie-detector tests) are often routinely administered to employees or prospective employees in
sensitive positions. A polygraph test will label subjects + (positive) if it determines the subject is lying and
(negative) if it determines the subject is not lying. Subjects can either be lying or not lying (truthful).
According to studies of polygraph reliability, the probability that the polygraph will test + (positive)
given/conditional that the subject is actually lying is 0.88. The probability that the polygraph will test -
(negative) given the subject is telling the truth (not lying) is 0.84. Assume that 90% chance a subject is telling
the truth (10% chance of lying).
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