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In a study of 252,009 cell phone users, it was found that 53 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000227 probability of a person developing cancer of the brain or nervous system. We therefore expect about 58 cases of such cancer in a group of 252,009 people. Estimate the probability of 53 or fewer cases of such cancer in a group of 252,009 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤53) = (Round to four decimal places as needed.)

In a study of 252,009 cell phone users, it was found that 53 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000227 probability of a person developing cancer of the brain or nervous system. We therefore expect about 58 cases of such cancer in a group of 252,009 people. Estimate the probability of 53 or fewer cases of such cancer in a group of 252,009 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤53) = (Round to four decimal places as needed.)

College Algebra
College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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In a study of 252,009 cell phone users, it was found that 53 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000227 probability of a person developing cancer of the brain or nervous system. We therefore expect about 58 cases of such cancer in a group of 252,009 people. Estimate the probability of 53 or fewer cases of such cancer in a group of 252,009 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤53) = (Round to four decimal places as needed.)
Transcribed Image Text:In a study of 252,009 cell phone users, it was found that 53 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000227 probability of a person developing cancer of the brain or nervous system. We therefore expect about 58 cases of such cancer in a group of 252,009 people. Estimate the probability of 53 or fewer cases of such cancer in a group of 252,009 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤53) = (Round to four decimal places as needed.)
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