A study compared dry matter intake (dmi) in mature cows (C) and heifers (H) receiving no treatment (control) , treatment A, or treatment B. The two factors are type of animal and treatment. Each factor combination had eight animals. A partial ANOVA table is given below. 
The F test for interaction is:
Definitions:
Egocentrism
A cognitive bias where individuals perceive the world primarily from their own perspective, often failing to understand or acknowledge others' viewpoints.
Middle Childhood
The developmental stage from approximately 6 to 12 years of age, encompassing early school years and characterized by significant growth in cognitive, emotional, and social domains.
Universal Sequence
A consistent order or pattern that events, stages, or processes follow across different contexts or populations.
Cultural Variation
Differences in norms, values, beliefs, and practices among various cultures.
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