Automobiles Traveling on a Road with a Posted Speed Limit

question 112

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. What proportion of the cars traveled at least 55 but less than 65 miles per hour?

• A) 0.33
• B) 0.48
• C) 0.56
• D) 0.80

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Definitions:

Mitochondria

Organelles found in the cytoplasm of eukaryotic cells, responsible for producing energy in the form of ATP through cellular respiration.

Eukaryotic Cells

Cells that contain a nucleus and other organelles enclosed within membranes, distinguishing them from prokaryotic cells.

Prokaryotic Cells

Simple, unicellular organisms lacking a nucleus and other membrane-bound organelles, which include bacteria and archaea.

Glycocalyx

A coating on the outside of an animal cell, formed by the polysaccharide portions of glycoproteins and glycolipids associated with the plasma membrane