(Solution) - Refer to the previous exercise Results in the regression equation -(2025 Original AI-Free Solution)

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Refer to the previous exercise. Results in the regression equation ? = -20,000 + 4000x for y = annual income were translated to units of euros, at a time when the exchange rate was $1.25 per euro.
a. Find the intercept of the regression equation. (What does 20,000 dollars equal in euros?)
b. Find the slope of the regression equation.
c. What is the correlation when annual income is measured in euros? Why?