The report “Congestion Reduction Strategies” (Texas Transportation Institute, 2005) investigated how much additional time (in hours, per year per traveler) drivers spend in traffic during peak hours for a sample of urban areas. Data on “large” (e.g., Denver) and “very large” (e.g., Houston) urban areas appear below.

Construct a comparative stem-and-leaf display (see Exercise 19) of this data. Compare and contrast the extra time spent in traffic for drivers in large urban areas and very large urban areas.

Data From Exercise 19

Do running times of American movies  differ somehow from times of French  movies? The authors investigated this  question by randomly selecting 25 recent  movies of each type, resulting in the following  running times:

Construct a comparative stem-and-leaf display by listing stems in the middle of your paper and then placing the American leaves out to the left and the French leaves out to the right. Then comment on interesting features of the display.

Transcribed Image Text:

Large: Very Large: 58