Two Students Taking a Multiple Choice Exam with 20 Questions

question 13

Multiple Choice

Two students taking a multiple choice exam with 20 questions and four choices for each question have the same incorrect answer on seven of eight incorrectly answered problems. The probability that student B guesses the same incorrect answer as student A on a particular question is 1/4. If the student is guessing, the guess for one problem is independent of the guess for the other problems. The probability of getting agreement on seven or more out of eight questions is:

• A)0.9996.
• B)0.0004.
• C)0.25.
• D)None of the answer options is correct.

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Definitions:

Voluntary Motor

Refers to muscle movements that are consciously controlled, typically involving coordination and purposeful actions.

DSM-5

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, a manual published by the American Psychiatric Association that classifies mental disorders.

DSM-IV-TR

The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, the predecessor to the DSM-5, used for diagnosing mental conditions.

Physical Symptoms

Bodily signs or indicators of a medical condition, illness, or injury.