An Investigator Conducts an Experiment Involving the Effects of Three

question 33

Multiple Choice

An investigator conducts an experiment involving the effects of three levels of a drug on memory. Subjects are randomly assigned to one of three conditions. A different drug level is administered in each condition. Memory is measured 10 minutes after each subject receives the drug. The following scores are recorded. The higher the score, the better the memory. Using a = .05, what do you conclude?

• A) retain H 0 ; we cannot conclude the drug has a different effect at these levels
• B) reject H 0 ; the drug has different effects at these levels
• C) retain H 0 ; the drug has the same effect at these levels
• D) reject H 0 ; the groups are not significantly different

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Definitions:

Mental Disorder

A mental disorder is a condition characterized by significant disturbance in an individual's cognition, emotional regulation, or behavior, usually associated with distress or impaired functioning.

Immigrated

The act of leaving one's country of birth to live permanently in another country.

Generalized Anxiety Disorder

A mental health disorder characterized by excessive, uncontrollable worry about various aspects of life, often accompanied by physical symptoms.

Obsessions

Persistent, intrusive, and unwanted thoughts that cause distress or anxiety.