An economist wants to determine whether there is a linear relationship between a country's gross domestic product (GDP) and carbon dioxide (CO2) emissions. 10 countries were sampled. The correlation between GDP and carbon dioxide emissions is r=0.912. Is the correlation significant at or=.05? Give the critical value: Is the correlation significant? (yes or no) 1200 1000 800 (in millions of metric tons) CO, emissions 600- 400- 200 2 3 6 GDP (in trillions of dollars)