The Width of a Confidence Interval Will Be

question 138

Multiple Choice

The width of a confidence interval will be:

• A)Narrower for 98 percent confidence than for 90 percent confidence.
• B)Wider for a sample size of 64 than for a sample size of 36.
• C)Wider for a 99 percent confidence than for 95 percent confidence
• D)Narrower for sample size of 25 than for a sample size of 36.
• E)None of thesE.

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Definitions:

Sampling Error

The difference between the characteristics of a sample and those of the population from which it was drawn, arising purely by chance.

Directional Research Hypothesis

A hypothesis that specifies the direction of the expected difference or relationship between variables, predicting how one variable will affect another.

Nondirectional Research Hypothesis

A hypothesis that predicts a relationship between variables without specifying the direction of the relationship.