Carbon foot print: Carbon dioxide CO2 is produced by burning fossil fuels such as oil and natural gas, and has been connected to global warming. The following table presents 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.
Year
Non-U.S.
U.S.
1993
3.3
19.7
1994
19.8
1995
19.5
1996
3.4
1997
20.0
1999
3.2
19.6
2000
2001
2004
3.7
Compute the least-squares regression line for predicting U.S. emissions from non-U.S. emissions. Round the slope and y-intercept to at least four decimal places.
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