Heavy Metals ______________

question 17

Multiple Choice

Heavy metals ______________

• A)are not harmful unless they are directly ingested
• B)become less hazardous over time as they degrade chemically
• C)are unregulated by the U.S.government
• D)become less hazardous after incineration
• E)bioaccumulate in animal tissues

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Definitions:

Hypothesis Test

A statistical approach that employs data from a sample to examine a hypothesis regarding the characteristics of a population.

Childcare Cost

The expense associated with providing care for children, especially in a daycare, nursery, or by a nanny.

Variance

The determination of the variability within a dataset, found by averaging the squares of the differences from the mean value.

P-value

The likelihood of getting test outcomes that are at least as significant as those seen in the test, under the assumption that the null hypothesis holds correct.