Solution: cell Phones and Brain cancer In a study of 420,095
Chapter 6, Problem 20(choose chapter or problem)
cell Phones and Brain cancer In a study of 420,095 cell phone users in Denmark, itwas found that 135 developed cancer of the brain or nervous system. Assuming that the useof cell phones has no effect on developing such cancers, there is a 0.000340 probability of aperson developing cancer of the brain or nervous system. We therefore expect about 143 casesof such cancers in a group of 420,095 randomly selected people. Estimate the probability of135 or fewer cases of such cancers in a group of 420,095 people. What do these results suggestabout media reports that cell phones cause cancer of the brain or nervous system?
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