A Study Was Done to Determine Whether There Is a Difference

question 33

Multiple Choice

A study was done to determine whether there is a difference in the amount of time (in hours) that graduate students versus undergraduate students spend on the Internet per day.The results of the analysis are shown below. To lower the P-value,you could ______.

• A)increase the sample sizes
• B)decrease the sample sizes
• C)decrease the degrees of freedom
• D)None of the above

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Definitions:

Sampling Bias

A bias in which certain members of a population are systematically more likely to be selected in a sample than others, skewing the results.

Representative

Someone or something that serves as a typical or excellent example of a class, group, or quality.

Population

The total number of inhabitants within a specific area or group, often studied in the contexts of sociology and ecology.

Correlation Coefficients

Correlation coefficients are statistical measures that describe the extent to which two variables change together, indicating the strength and direction of a relationship.