Laundry Detergent Preference Narrative
A consumer would like to know if there is a difference in the performance of three different laundry detergents. Eighteen pieces of white cloth were soiled with grape juice then washed in one of the three detergents A, B, or C. The resulting whiteness readings are listed below, where the larger number indicates whiter fabric. 
-Refer to Laundry Detergent Preference Narrative. Develop a 95% confidence interval for 
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Definitions:
Research Study
A structured academic or scientific investigation aimed at discovering new information or understanding existing phenomena.
APA Code
The Ethical Principles of Psychologists and Code of Conduct established by the American Psychological Association, guiding professional behavior.
Ethics
The branch of philosophy that involves systematizing, defending, and recommending concepts of right and wrong behavior.
Puberty
A phase of human development during which a child's body matures into an adult body capable of sexual reproduction.
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