The Energy Information Administration records per capita consumption of energy by country. The box plot below shows 2011 per capita energy consumption (in millions of BTUs) for 36 OECD countries, with a mean of 195 and a standard deviation of 120. Iceland had the largest per capita consumption at 665 million BTU.
a. Use the box plot to give approximate values for the five-number summary of energy consumption.
b. Italy had a per capita consumption of 139 million BTU. How many standard deviations from the mean was its consumption?
c. The United States was not included in the data, but its per capita consumption was 334 million BTU. Relative to the distribution for the included OECD nations, the United States is how many standard deviations from the mean?

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50 150 250 350 450 550 650 Per Capita Energy Consumption (in millions BTU)