In Terms of Long-Term Temperature Increases in the Atmosphere, Which

question 83

Multiple Choice

In terms of long-term temperature increases in the atmosphere, which of the following is TRUE?

• A) Average global temperature has risen 5.0°C in the last 100 years.
• B) No changes have been observed in the 21st century.
• C) The greenhouse effect has never been shown to be real.
• D) Increases in greenhouse gases have been observed.
• E) It appears that we can readily curb the carbon dioxide problem.

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Definitions:

Margin of Error

An expression of the amount of random sampling error in a survey's results, indicating a confidence interval within which the true value lies.

σ

Symbol representing the standard deviation of a population in statistics.

Population Mean

The average of a set of values from the entire population, representing the central tendency of the total data set.

Confidence Intervals

Intervals that are calculated from the observed data and provide a range that likely includes the true parameter of the population, expressed at a certain confidence level.