On a Multiple Choice Test with 27 Questions, Each Question

question 112

Multiple Choice

On a multiple choice test with 27 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the variance for the number of correct answers.

• A) 25.6
• B) 2.3
• C) 50.6
• D) 5.1

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Definitions:

Tricyclic Drugs

A class of antidepressant medications used primarily in the treatment of depression and certain anxiety disorders, known for their chemical structure comprising three rings.

MAOIs

A class of antidepressant drugs that work by inhibiting the activity of monoamine oxidase, an enzyme involved in breaking down neurotransmitters in the brain.

ECT

Electroconvulsive Therapy, a medical treatment most commonly used for severe major depression which involves short electrical stimulation of the brain while the patient is under anesthesia.

Action Potentials

Short-lasting events in which the electrical membrane potential of a cell rapidly rises and falls, occurring in several types of animal cells, serving as a primary mechanism of communication in neurons.