A Random Sample of 121 Automobiles Traveling on an Interstate

question 125

Multiple Choice

A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph. The 95 percent confidence interval for μ is determined as (61.08, 68.92) . If we are to reduce the sample size to 100 (other factors remain unchanged) , the 95 percent confidence interval for μ would:

• A) become wider.
• B) become narrower.
• C) be the same.
• D) be impossible to determine.

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Definitions:

Spanish Exploration

The period where Spain explored the Americas and other parts of the globe, beginning in the late 15th century, ushering in the era of European colonization.

European Diseases

Infectious diseases brought to the Americas by European explorers and colonizers that had devastating effects on the indigenous populations, who had no immunity to these diseases, including smallpox, influenza, and measles.

Quebec

A province in eastern Canada, known for its French-speaking population and distinctive French-Canadian culture.

Samuel de Champlain

A French navigator, cartographer, and explorer credited with founding New France and Quebec City in the early 17th century.