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An ANOVA with 2 factors (each one with 2 levels) was run with a sample of size 44, in order to explain the level of Understanding.
The Country of Origin (Portugal and Germany) was added as a third factor.
In this ANOVA (with the 3 factors) the Mean Sum of Squares of the Error is equal to 409 and the p-value for Country of Origin is 0.10.
Find out the Sum of Squares of the Country of Origin.