the average amounts (in metric tons) of CO2 emissions for certain years per person in the United States and per person in the rest of the world. Use a TI-84 calculator to answer the following. Year Non-U.S. U.S. 1990 3.6 19.2 1991 3.6 19.0 1992 3.5 18.8 1993 3.3 19.7 1994 3.3 19.8 1995 3.3 19.5 1996 3.4 19.7 2000 3.3 20.0 2001 3.3 19.6 2006 3.7 19.0 Send data to Excel Part 1 of 3 (a) Compute the least-squares regression line for predicting U.S. emissions from non-U.S. emissions. Round the slope and y-intercept values to four decimal places. 26.709 2.1222x Regression line equation: y Part: 1/3