Please show all steps USING ONLY EXCEL FORMULAS A study of 420,047 cell phone users found that 139 of them developed cancer of the brain or nervous system. Prior to this study of cell phone​ use, the...


Please show all steps
USING ONLY EXCEL FORMULAS


A study of 420,047 cell phone users found that 139 of them developed cancer of the brain or nervous system. Prior to this study of cell phone​ use, the rate of such cancer was found to be 0.0319​%.


A) . Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system


B) Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell​ phones? Why or why​ not?




Jun 09, 2022
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