Persons with Profound Mental Retardation Have an IQ Level Of

question 53

Multiple Choice

Persons with profound mental retardation have an IQ level of:

• A)55-70
• B)40-54
• C)20-25
• D)0-19

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Definitions:

Z-statistic

A statistic that measures the distance in standard deviations of a sample mean from the population mean under the null hypothesis.

Rejection Region

The set of values for which the null hypothesis is rejected in hypothesis testing.

Typing Speeds

The measure of how fast an individual can type, often expressed in words per minute (WPM), influencing productivity in many computer-related tasks.

Z-statistic

A statistical measurement that represents the number of standard deviations a data point is from the mean of a data set.