You have data for 30 country on N, the average number of ice-cream purchased per adult in one year, GDP per capita, measured in US $, and fits the following regression N^= 2.0 + 0.0020 G ; R² = 0.03; RSS = 4000.0 You detect that GDP has been underestimated by $90 in every country and that N should have been regressed on G*, G* = G + 90. Find, with mathematical proofs new value of the coefficient of determination

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