Question

The mayor of Gemelos, CA strongly believes that drinking coffee stunts growth. In an attempt to getcoffee banned from Gemelos, the mayor gathers the 43 pairs of young (under the age of 18) identicaltwins living in Gemelos. For the course of five months he requires one twin to drink coffee and the otherto abstain from coffee drinking. Then the mayor records the height of each twin.

Is this a matched pairs design? Justify.

Answer 1

Yes, it is a matched pairs design.

Explanation:

Assuming that the twins used in the experiment are identical, this can be treated as a matched pairs designed. Although there are two individuals receiving different treatments, they are genetically similar enough for this to be considered a matched pairs design (One individual subjected to two different treatments).