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The average U.S. dollar/Euro exchange rate from a sample of 36 monthly observations is $1.00/Euro. The population variance is 0.49. What is the 95% confidence interval for the mean U.S. dollar/Euro exchange rate? A. $0.8075 to $1.1925. B. $0.5100 to $1.4900. C. $0.7713 to $1.2287. |