Additional Information and Full Hypothesis Test Examples · Example 8
In a study of 420,019 cell phone users, 172 of the subjects developed brain cancer. Test the claim that cell phone users developed brain cancer at a greater rate than that for non-cell phone users. The rate of brain cancer for non-cell phone users is 0.0340 percent. Since this is a critical issue, use a 0.005 significance level. Explain why the significance level should be so low in terms of a Type I error.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Statistics · §9.5 Additional Information and Full Hypothesis Test Examples · Example 8
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