A study compares the effect on college students of two different TV advertisements for spring break in Gulf Shores, Alabama. Call the ads "Ad #1" and "Ad #2." We want to know which ad makes more students want to visit Gulf Shores during spring break. The subjects are 90 students taking a course in hotel management. The design of the study looks like this: 
The statistical name for this study design is
Definitions:
Series Circuit
A circuit in which the components or contact symbols are connected end to end, and all must be closed to permit current flow.
Series-Parallel Circuit
A circuit configuration that combines elements in both series and parallel to achieve desired electrical characteristics.
NOR Function
A logical operation that produces a true output only when all its inputs are false.
NAND Function
A binary operation that produces a false output only when all its inputs are true; it's often described as "NOT AND."
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