Researchers Wish to Test the Effectiveness of a Drug Designed

question 21

Multiple Choice

Researchers wish to test the effectiveness of a drug designed to treat depression.Seven clinically depressed patients are given a standardized depression test before taking the drug and are evaluated 4 weeks later using the same test.It is known that the scores from this particular test are not normally distributed.The scores are shown here. ​ ​
Use a sign test to conclude whether the drug can be associated with a median decrease in depression level.Choose the correct p-value and conclusion.(Use α = 0.05.)

• A) p = 0.5000; there appears to be no median decrease in depression.
• B) p = 0.8125; there appears to be no median decrease in depression.
• C) p = 0.1875; there appears to be no median decrease in depression.
• D) p = 0.1875; there appears to be a median decrease in depression.

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Definitions:

SASSI

A self-report screening tool designed to identify individuals who have substance dependency problems based on their responses to various questions.

Substance Dependency

A condition characterized by the compulsive use of substances (such as drugs or alcohol) despite harmful consequences, leading to physical and psychological dependence.

Electra Complexes

A psychoanalytic theory describing a girl's psychosexual competition with her mother for possession of her father, akin to the Oedipus complex in boys.

Freudian Theory

A psychological theory developed by Sigmund Freud that emphasizes unconscious drives and conflicts as the primary sources of human behavior.