carbon3
11. Carbon Emissions. The following table shows the carbon dioxide emissions (in millions of metric tons) from the consumption of fossil fuels in 2000 and 2005 for a random sample of 10 nations. Test whether the emissions have been increasing. That is, test, using a sign test, whether the population median of the difference (2005 – 2000) in carbon dioxide emissions is greater than zero, using level of significance .
Nation | Carbon emissions in 2000 (millions of metric tons) |
Carbon emissions in 2005 (millions of metric tons) |
---|---|---|
Brazil | 342.1 | 360.6 |
Canada | 558.4 | 631.3 |
China | 2912.6 | 5322.7 |
France | 399.0 | 415.3 |
India | 994.1 | 1165.7 |
Ireland | 40.4 | 44.1 |
South Africa | 383.4 | 423.8 |
Thailand | 160.6 | 234.2 |
Vietnam | 47.4 | 80.4 |
United States | 5823.5 | 5957.0 |