A Recent Review by Researchers Demonstrated That Rates of ADD

question 3

Multiple Choice

A recent review by researchers demonstrated that rates of ADD and ADHD are:

• A)higher in developed nations.
• B)lower in developed nations.
• C)the same worldwide if the same diagnostic criteria are used.
• D)None of the answers is correct.

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Definitions:

Sample Mean

The average of all numerical values in a sample set, calculated by summing all values and dividing by the number of values.

Level of Confidence

The probability or degree of certainty that the result of a statistical test or estimate falls within a specific range.

Confidence Interval

A range of values derived from sample statistics that is likely to contain the true parameter of the population with a specified level of confidence.

Population Mean

The average of all the numerical values in a population, calculated as the total sum of the values divided by the number of values in the population.