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Standard IX
Geography
Wildlife in Karnataka
YearNorth dis...
Question

YearNorth districtCentral DistrictSouth District
20005654951023
2002552445980
2004503376924
2006455365887
2008406278842
2010354225757
2012343201624
2014364176596
To better measure the effects of increase in poaching, the nation of Africa began a study in 2000 to track the number of elephants in each of the country's three administrative districts. A count of the number of elephants in each region was performed by the researchers every two years; these counts were performed in January. The table above shows the results of the study.
Researchers determine that at a 95% confidence level, their margin of error for the population of elephants in 2010 was 17.4. If the actual population in 2010 is within the confidence interval, what is the lowest possible population of elephants in Africa in 2010?

A
1317
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B
1318
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C
1319
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D
1320
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Solution

The correct option is C 1319
As per given table the population of elephants in Africa in 2010 is 354+225+757=1336
But their margin of error for the population of elephants in 2010 was 17.4
Then the lowest possible population of elephants in Africa in 2010=1336-17.4=1318.6 say 1319

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