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OpenStudy (anonymous):
According to a national statistics bureau, 3.7% of males living in the Southwest were retired exterminators. A researcher believes that the percentage has decreased since then. She randomly selects 250 males in the Southwest and finds that 4 of them are retired exterminators. Test this researcher's claim at the alpha=.1 level of significance. How do I find this out using the p=value approach?
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