A Researcher Wanted to Determine If Using an Octane Booster

question 21

Multiple Choice

A researcher wanted to determine if using an octane booster would increase gasoline mileage.A random
sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks
with the booster.
-What is the critical value using

• A)-1.782
• B)-1.761
• C)-1.943
• D)-1.895

---

Definitions:

Protective Factor

An aspect of an individual's environment or personality that reduces their vulnerability to negative psychological or physical outcomes.

Obsessive-Compulsive Disorder

A mental disorder characterized by unwanted repetitive thoughts (obsessions) and actions (compulsions).

Repetitive

Characterized by repeating the same action or event over and over again.

Intrusive

Unwanted and often recurrent thoughts, images, or impulses that invade an individual's consciousness, typically causing significant distress.