Some Employers Use Lie Detector Tests to Screen Job Applicants

question 35

Multiple Choice

Some employers use lie detector tests to screen job applicants.Lie detector tests are not completely reliable.Suppose that a polygraph can detect 64% of lies,but incorrectly identifies 16% of true statements as lies.A company gives its job applicants a polygraph test,asking "Did you tell the truth on your job application?".All the applicants answer "Yes",but the test identifies some of those answers as lies,thereby causing the person to fail the test.Suppose that 90% of the job applicants tell the truth during the polygraph test.What is the probability that a person who fails the test was actually telling the truth?

• A)0.444
• B)0.308
• C)0.16
• D)0.692
• E)0.9

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Definitions:

Dizygotic Twins

Also known as fraternal twins, they are siblings that develop from two different eggs fertilized by two different sperm, sharing about 50% of their genetic makeup.

Fertilized Eggs

The result of a sperm cell merging with an egg cell, marking the beginning of a new organism's development.

Genetic Influences

The impact of genes inherited from parents on various aspects of an individual’s physical traits, behavior, and predisposition to certain conditions.

Environmental Influences

The impact of surroundings, including physical, social, and cultural factors, on the development and behavior of individuals.