In a study of 460,112 cell phone users, it was found that 104 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000271 probability of a person developing cancer of the brain or nervous system. We therefore expect about 125 cases of such cancer in a group of 460,112 people. Estimate the probability of 104 or fewer cases of such cancer in a group of 460,112 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤104)= ?? (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports?
In a study of 460,112 cell phone users, it was found that 104 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000271 probability of a person developing cancer of the brain or nervous system. We therefore expect about 125 cases of such cancer in a group of 460,112 people. Estimate the probability of 104 or fewer cases of such cancer in a group of 460,112 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤104)= ?? (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports?
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 460,112 cell phone users, it was found that 104 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000271 probability of a person developing cancer of the brain or nervous system. We therefore expect about 125 cases of such cancer in a group of 460,112 people.
Estimate the probability of 104 or fewer cases of such cancer in a group of 460,112 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system?
(a) P(x≤104)= ?? (Round to four decimal places as needed.)
(b) What does the result from part (a) suggest about the media reports?
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