A tea manufacturer is trying to decide whether to add peach flavoring or mango flavoring to green tea for a new product. A study is done by stopping customers at a grocery store and asking them to drink a small cup of tea with each flavoring, then to rate each of the two flavors on a scale from 1 to 10. The order in which the teas are presented is randomly assigned for each person. What type of study is this?
A) An observational study.
B) A sample survey.
C) A case-control study.
D) A matched-pairs design.

Question

Quizplus · Accepted Answer

This is a matched-pairs design because each participant is exposed to both treatments (peach flavoring and mango flavoring) in a random order, and their responses to each treatment are compared. This design controls for individual differences among participants by matching each participant to themselves.

A Tea Manufacturer Is Trying to Decide Whether to Add