The Kyoto Protocol was signed in 1997, and required countries to start reducing their carbon emissions. The protocol became enforceable in February 2005. In 2004, the mean CO2 emission was 4.87 metric tons per capita. Table 7.3.3 contains a random sample of CO2 emissions in 2010 ("CO2 emissions," 2013). Is there enough evidence to show that the mean CO2 emission is lower in 2010 than in 2004? Test at the 1% level. Table #7.3.3: CO2 Emissions (in metric tons per capita) in 2010 1.36 1.42 5.93 5.36 0.06 9.11 7.32 7.93 6.72 0.78 1.80 0.20 2.27 0.28 5.86 3.46 1.46 0.14 2.62 0.79 7.48 0.86 7.84 2.87 2.45
- The Kyoto Protocol was signed in 1997, and required countries to start reducing their carbon emissions. The protocol became enforceable in February 2005. In 2004, the mean CO2 emission was 4.87 metric tons per capita. Table 7.3.3 contains a random sample of CO2 emissions in 2010 ("CO2 emissions," 2013). Is there enough evidence to show that the mean CO2 emission is lower in 2010 than in 2004? Test at the 1% level.
Table #7.3.3: CO2 Emissions (in metric tons per capita) in 2010
| 1.36 | 1.42 | 5.93 | 5.36 | 0.06 | 9.11 | 7.32 |
| 7.93 | 6.72 | 0.78 | 1.80 | 0.20 | 2.27 | 0.28 |
| 5.86 | 3.46 | 1.46 | 0.14 | 2.62 | 0.79 | 7.48 |
| 0.86 | 7.84 | 2.87 | 2.45 |
Question 5:)Table #7.3.7 contains pulse rates after running for 1 minute, collected from females who drink alcohol ("Pulse rates before," 2013). The mean pulse rate after running for 1 minute of females who do not drink is 97 beats per minute. Do the data show that the mean pulse rate of females who do drink alcohol is higher than the mean pulse rate of females who do not drink? Test at the 5% level.
Table #7.3.7: Pulse Rates of Woman Who Use Alcohol
|
176 |
150 | 150 | 115 | 129 | 160 |
| 120 | 125 | 89 | 132 | 120 | 120 |
| 68 | 87 | 88 | 72 | 77 | 84 |
| 92 | 80 | 60 | 67 | 59 | 64 |
| 88 | 74 | 68 |
Question 8.) Maintaining your balance may get harder as you grow older. A study was
conducted to see how steady the elderly is on their feet. They had the subjects stand on a force platform and have them react to a noise. The force platform then measured how much they swayed forward and backward, and the data is in table #7.3.10 ("Maintaining balance while," 2013). Do the data show that the elderly sway more than the mean forward sway of younger people, which is 18.125 mm? Test at the 5% level.
Table #7.3.10: Forward/backward Sway (in mm) of Elderly Subjects
| 19 | 30 | 20 | 19 | 29 | 25 | 21 | 24 | 50 |
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