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A business school conducted a survey of companies in its state. They mailed a questionnaire to...

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Basic Math

A business school conducted a survey of companies in its state.They mailed a questionnaire to 200 small companies, 200medium-sized companies and 200 large companies. The rate ofnonresponse is important in deciding how reliable survey resultsare. Here are the data:

Small             Medium          Large
Response            125                      81               40
No response         75                     119             160

What is the overall rate of nonresponse? If response rate is notrelated to size of company, you would expect all companies,regardless of size, to have a similar response rate.

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