Which of the Following Statements Regarding Down Syndrome Is False

question 34

Multiple Choice

Which of the following statements regarding Down syndrome is false?

• A) Trisomy 21 is the cause of Down syndrome.
• B) Down syndrome is the most common serious birth defect in the United States.
• C) People with Down syndrome usually have a shorter life span than normal.
• D) Down syndrome is least likely to be seen in the infants of mothers over 40.

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Definitions:

Real Upper Limits

In statistics, the value that slightly exceeds the upper boundary of a class interval in a frequency distribution, taking into account the continuity of data.

Variable

An element, feature, or factor that is liable to vary or change, used in experimental and observational research studies.

Particular Interval

A specific range within a set of data or a mathematical function, generally defined by its upper and lower bounds.

Grouped Frequency Distribution

A grouped frequency distribution organizes data into intervals or groups, showing the number of occurrences for each interval.