# Question

As reported by tradingeconomics.com on September 2, 2012, the unemployment rates (in %) in major economies around the world are as follows:
Country Unemployment Rate (in %)
Australia........... 5.2
China........... 4.1
France ........... 10.0
Germany........... 6.8
India ........... 3.8
United Kingdom....... 8.0
United States .......... 8.3
a. Calculate the margin of error used in the 95% confidence level for the population mean. Explain the assumption made for the analysis.
b. How can we reduce the margin of error for the 95% confidence interval?

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