page 2 Example 3 Biomass in Tropical Forests Using a sample of 4079 inventory

Page 2 example 3 biomass in tropical forests using a

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page 2 Example 3: Biomass in Tropical ForestsUsing a sample of 4079 inventory plots, scientists give a 95% confidence interval of 9,600 to 13,600 tons for the mean amount of carbon per square kilometer in tropical forests . Clearly interpret the meaning of this confidence interval. Example 4: Is the Economy a Top Priority?A survey of 1,502 Americans in January 2012 found that 86% consider the economy a “top priority” for the president and congress. The standard error for this statistic is 0.01. Find and interpret a 95% confidence interval for the true proportion of all Americans that considered the economy a “top priority” at that time?

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