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Unformatted text preview: study usually includes a comparison of initial respondents and respondents after a second, and sometimes third, mailing. In one study the investigators tried to accomplish this comparison by examining for differences between early and late respondents to a questionnaire. Comparisons were made for a number of factors. The number of early and late respondents by gender is given below. How should these values be compared in order to determine if the proportions of male and female respondents differed between the early and late responders? Comparison of Early and Late Respondents by Gender Early Late Total Male 105 96 201 Female 41 49 90 Total 146 145 291...
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- Fall '08