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Source: Veritas Prep
The Department of Environmental Protection measured the volume of water in 10 similarly sized reservoirs in State X and found that the standard deviation of their volumes at the start of the year was a certain value. Was the standard deviation of those 10 volumes the same at the end of the year?
1) During the year the volume of water in each reservoir decreased by 5 million cubic gallons
2) During the year the volume of water in each reservoir decreased by 20%
The OA is A
The Department of Environmental Protection measured the volume of water in 10 similarly sized reservoirs in State X and found that the standard deviation of their volumes at the start of the year was a certain value. Was the standard deviation of those 10 volumes the same at the end of the year?
1) During the year the volume of water in each reservoir decreased by 5 million cubic gallons
2) During the year the volume of water in each reservoir decreased by 20%
The OA is A
