Exposure to Lead Continues to Cause Unsafe Levels in Children

question 65

Multiple Choice

Exposure to lead continues to cause unsafe levels in children in the United States. The source(s) of this lead is

• A) peeling lead-based paint in houses
• B) Lead leaching from old water pipes
• C) Coal burning power plants
• D) Waste incinerators
• E) all of these answers

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Definitions:

Relative Frequency

The proportion of occurrences of a specific event compared to the overall amount of attempts or observations.

Nonoverlapping Classes

Categories or groups in a classification system where each member of the population belongs to one and only one group, ensuring distinct boundaries.

Cumulative Frequency

The sum of a series of frequencies, calculated by adding each frequency from a frequency distribution table to the sum of its predecessors.

Upper Limit

The maximum value in a given set or the highest value that a variable can assume.