A Questionnaire Is Designed to Investigate Attitudes About Political Corruption

question 108

Short Answer

A questionnaire is designed to investigate attitudes about political corruption in government. The experimenter would like to survey two different groups--Republicans and Democrats--and compare the responses to various "yes-no" questions for the two groups. The experimenter requires that the sampling error for the difference in the proportion of yes responses for the two groups is no more than 4 percentage points with probability equal to 0.95. If the two samples are both the same size, how large should the samples be?
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Definitions:

Independent Variable

In scientific research, the variable that is manipulated or changed to examine its effects on a dependent variable.

International Review Board

A committee that reviews and approves research involving human participants to ensure ethical standards are met.

Ethical Guidelines

Principles designed to govern behavior, often within a professional context, to ensure moral and ethical standards are maintained.

Archival Research

A research method involving the analysis of existing records or data collections to extract insights or test hypotheses without generating new data.