Which of the Following Describe a Problem with the U

question 15

Multiple Choice

Which of the following describe a problem with the U.S. water quality today? (Select all that apply.)

• A) Companies demand high reimbursement when asked to stop dumping heavy metals into local water sources.
• B) Many aquifers are contaminated with pesticides and fertilizers.
• C) More than 45 million Americans drink untreated water.
• D) Sediment from construction, agriculture, and deforestation is often present.
• E) Underground water, if contaminated, cannot be cleansed.
• F) Water-related diseases (cholera, typhoid, dysentery) frequently occur.

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Definitions:

Population Standard Deviation

A measure that quantifies the spread or dispersion of a set of data points in a population from its mean value; it represents the square root of the variance of the population.

Mean

The arithmetic average of a set of numbers, calculated by summing them and dividing by the count of numbers.

Sample Range

The difference between the largest and smallest values in a sample, used as a measure of variability.

Outlier

A data point that differs significantly from other observations and can potentially skew results.