Exhibit 8-3
a Random Sample of 81 Automobiles Traveling on a Section

question 35

Multiple Choice

Exhibit 8-3
A random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. The distribution of speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph.
-Refer to Exhibit 8-3. If the sample size was 25 (other factors remain unchanged) , the interval for $\mu$ would

• A)not change
• B)become narrower
• C)become wider
• D)become zero

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Definitions:

1946

The year following the end of World War II, marked by significant global post-war recovery efforts, the beginning of the Cold War, and the establishment of the United Nations.

Geopolitics

The study of how geographic factors influence political power, international relations, and strategic decision-making.

Mobilize Support

To gather or rally support among a large group of people or organizations, often for a specific cause or action.

Postwar Strike Wave

A series of labor strikes that occurred in various industries across the United States immediately following World War I, reflecting workers' demands for better wages and working conditions.