K In a study of 473,107 cell phone users, it was found that 113 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000277 probability of a person developing cancer of the brain or nervous system. We therefore expect about 132 cases of such cancer in a group of 473,107 people. Estimate the probability of 113 or fewer cases of such cancer in a group of 473,107 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤ 113) = (Round to four decimal places as needed.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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In a study of 473,107 cell phone users, it was found that 113 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a
0.000277 probability of a person developing cancer of the brain or nervous system. We therefore expect about 132 cases of such cancer in a group of 473,107 people.
Estimate the probability of 113 or fewer cases of such cancer in a group of 473,107 people. What do these results suggest about media reports that cell phones cause
cancer of the brain or nervous system?
(a) P(x≤ 113) =
(Round to four decimal places as needed.)
Transcribed Image Text:K In a study of 473,107 cell phone users, it was found that 113 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000277 probability of a person developing cancer of the brain or nervous system. We therefore expect about 132 cases of such cancer in a group of 473,107 people. Estimate the probability of 113 or fewer cases of such cancer in a group of 473,107 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤ 113) = (Round to four decimal places as needed.)
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