A study of 420,037 cell phone users found that 0.0326% of them developed cancer of the brain or nervous system. Prior to
Posted: Wed Jul 06, 2022 12:27 pm
A study of 420,037 cell phone users found that 0.0326% 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 0.0312% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %<p<% (Do not round until the final answer. Then round to three decimal places as needed.)