In a study of 302, 687 cell phone users, it was found that 122 developed cancer
ID: 3223456 • Letter: I
Question
In a study of 302, 687 cell phone users, it was found that 122 developed cancer to the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000441 portability of a parson developing canoe of the brain or nervous system. We therefore expect about 134 cases of such cancer in a group of 302, 887 people. Estimate the probability of 122 or fewer cases of such cancer in a group of 302, 887 people. What do these results suggest about media reports that cell phones cause canoe of the brain of neurons system? (a) P(x lessthanorequalto 122) = (b) What does the result from part(a) suggest about the media reports? A. The media reports appear to be connect because one would expect that more than 122 cell phone users would develop canoe and the study offers some evidenced to support this. B. The media reports appear to be incorrect because one would expect that more than 134 cell phone users would develop canoe, in fact, the study may offer some evidence to suggest that cell phone use decreases the probability of developing canoe.Explanation / Answer
Solution:
(a) P(x 122) = 122/302,887
= 0.00040279048
(b) c. The media reports appear to be correct because one would expect that less than 134 cell phone users would develop cancer and the study offers some evidence to support this.