Arsenic Is Released into Drinking Water

question 72

Multiple Choice

Arsenic is released into drinking water

• A) from inorganic fertilizers
• B) from sewage and animal wastes
• C) from food processing facilities
• D) when any well is drilled down to the water table
• E) from mining refuse

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Definitions:

Significance Test

A statistical method used to determine if there is a significant difference between groups or conditions, typically by comparing p-values to predefined significance levels.

Outliers

Observations in a dataset that are significantly different from the other data points, often indicating measurement error, variability in measurement, or a novel discovery.

Alternative Hypothesis

In statistics, the hypothesis that proposes there is a difference between two or more groups or variables, contrasted with the null hypothesis.

Two-sided Test

A statistical test designed to determine if there is a significant difference between a parameter and a specific value, in either direction.