Question: 3 . ) The Kyoto Protocol was signed in 1997 , and required countries to start reducing their carbon emissions . The protocol became enforceable

3 . ) 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 CO , emission was 4 87 metric tons per capita , Is there enough evidence to show that the mean CO emission is lower in 2010 than in 2004 ? State the random variable population parameter , and hypotheses

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