Automobiles Traveling on a Road with a Posted Speed Limit

question 10

Multiple Choice

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 table is a frequency distribution of speeds. When using a polygon to graph quantitative data,what does each point represent?

• A) The lower limit of a particular class and its width
• B) The midpoint of a particular class and its associated frequency or relative frequency
• C) The midpoint of a particular class and its associated cumulative frequency or cumulative relative frequency
• D) The upper limit of a particular class and its associated cumulative frequency or cumulative relative frequency

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Definitions:

Artificial Selection

The process by which humans breed plants or animals for particular genetic characteristics.

Directional Selection

Mode of natural selection in which forms of a trait at one end of a range of variation are adaptive.

Disruptive Selection

Mode of natural selection in which forms of a trait at both ends of a range of variation are adaptive, and intermediate forms are selected against.

Hybrid Sterility

A condition in hybrids between different species where the offspring are sterile, unable to produce viable gametes.