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Mathematics, 21.04.2020 03:07 carlo123

A study of 420,081 cell phone users found that 130 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 0.0313% for those not using cell phones. Complete parts (a) and (b).

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A study of 420,081 cell phone users found that 130 of them developed cancer of the brain or nervous...
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