In Constructing a 95 Percent Confidence Interval, If You Increase

question 70

Multiple Choice

In constructing a 95 percent confidence interval, if you increase n to 4n, the width of your confidence interval will be (assuming other things remain the same) :

• A)about 25 percent of its former width.
• B)about two times wider.
• C)about 50 percent of its former width.
• D)about four times wider.

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Definitions:

Relationship

The manner through which two or more ideas, items, or individuals are linked, or the condition of being linked.

Variables

Elements, features, or factors that are likely to vary or change from one situation to another in an experiment or study.

Representative Sample

A subset of a population that accurately reflects the members of the entire population.

Population

The total number of individuals within a species or a designated area at a specific time.