Scientists hoping to curb deforestation estimate that the carbon stored in tropical forests in Latin America, sub-Saharan Africa, and southeast Asia has a total biomass of 247 gigatons spread over 2.5 billion hectares. The scientists measured carbon levels at 4079 inventory plots and also used information from satellite images. A 95% confidence interval for the mean amount of carbon per square kilometer in tropical forests in Latin America, sub-Saharan Africa, and southeast Asia is 9600 to 13,600 tons. Interpret this confidence interval. In addition, explain what the scientists would have to do to calculate the estimated quantity exactly.