Problem

The accompanying table includes only countries in the top ten in a certain year for both production and consumption of energy. (Energy units are quadrillion Btu and population is in millions.) Which country occupies the twenty-fifth percentile in population? Click the icon to view the World's Largest Energy Producers and Consumers table. Energy Producers and Consumers \begin{tabular}{|cccc|} \hline Country & Population & Production & Consumption 맘 \\ Country A & 1374 & 102.7 & 124.3 \\ Country B & 333 & 72.1 & 100.8 \\ Country C & 139 & 57.2 & 31.3 \\ Country D & 36 & 15.2 & 11.7 \\ Country E & 1281 & 13.5 & 24.7 \\ \hline \end{tabular}

Solution

Step 1 :The question is asking for the country that occupies the 25th percentile in population. The 25th percentile is the value below which 25% of the data falls.

Step 2 :To find this, we need to sort the countries by population and find the country that is one quarter of the way through the list.

Step 3 :Since there are only 5 countries, the 25th percentile would be the country with the second smallest population.

Step 4 :Organizing the countries and their populations, we have: 'Country A' with 1374 million, 'Country B' with 333 million, 'Country C' with 139 million, 'Country D' with 36 million, and 'Country E' with 1281 million.

Step 5 :Sorting these by population, we get: 'Country D' with 36 million, 'Country C' with 139 million, 'Country B' with 333 million, 'Country E' with 1281 million, and 'Country A' with 1374 million.

Step 6 :The country that occupies the twenty-fifth percentile in population is the second one in this list.

Step 7 :Final Answer: The country that occupies the twenty-fifth percentile in population is \(\boxed{\text{Country C}}\).

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Source: https://solvelyapp.com/problems/XLEf2Qjo4l/

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