Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system. The following is a frequency distribution of speeds. 
(See the Excel Data File.) The standard deviation of this distribution is the closest to ________.
Definitions:
Genetic Makeup
The complete set of genes or genetic material present in a cell or organism, influencing its characteristics and traits.
Behavioral Genetics
A field of research that uses twin studies and adoption studies to investigate the relative effects of heredity and environment on behavior.
Heredity
The passing of traits from parents to their offspring, either through asexual reproduction or sexual reproduction, influenced by genes.
Environmental Influences
refer to external factors like culture, education, and social interactions that impact behavior and development.
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