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In a study of 484,464 cell phone users, it was found that 156 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000376 probability of a person developing cancer of the brain or nervous system. We therefore expect about 183 cases of such cancer in a group of 484,464 people. Estimate the probability of 156 or fewer cases of such cancer in a group of 484,464 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤156) = (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports? A. The media reports appear to be incorrect because one would expect that more than 183 cell phone users would develop cancer. In fact, the study may offer significant evidence to suggest that cell phone use decreases the probability of developing cancer. B. The media reports appear to be correct because one would expect that more than 156 cell phone users would develop cancer and the study offers significant evidence to support this. C. The media reports appear to be correct because one would expect that less than 183 cell phone users would develop cancer and the study offers significant evidence to support this.

In a study of 484,464 cell phone users, it was found that 156 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000376 probability of a person developing cancer of the brain or nervous system. We therefore expect about 183 cases of such cancer in a group of 484,464 people. Estimate the probability of 156 or fewer cases of such cancer in a group of 484,464 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤156) = (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports? A. The media reports appear to be incorrect because one would expect that more than 183 cell phone users would develop cancer. In fact, the study may offer significant evidence to suggest that cell phone use decreases the probability of developing cancer. B. The media reports appear to be correct because one would expect that more than 156 cell phone users would develop cancer and the study offers significant evidence to support this. C. The media reports appear to be correct because one would expect that less than 183 cell phone users would develop cancer and the study offers significant evidence to support this.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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In a study of 484,464 cell phone users, it was found that 156 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000376 probability of a person developing cancer of the brain or nervous system. We therefore expect about 183 cases of such cancer in a group of 484,464 people. Estimate the probability of 156 or fewer cases of such cancer in a group of 484,464 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤156) = (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports? A. The media reports appear to be incorrect because one would expect that more than 183 cell phone users would develop cancer. In fact, the study may offer significant evidence to suggest that cell phone use decreases the probability of developing cancer. B. The media reports appear to be correct because one would expect that more than 156 cell phone users would develop cancer and the study offers significant evidence to support this. C. The media reports appear to be correct because one would expect that less than 183 cell phone users would develop cancer and the study offers significant evidence to support this.
Transcribed Image Text:In a study of 484,464 cell phone users, it was found that 156 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000376 probability of a person developing cancer of the brain or nervous system. We therefore expect about 183 cases of such cancer in a group of 484,464 people. Estimate the probability of 156 or fewer cases of such cancer in a group of 484,464 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(x≤156) = (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports? A. The media reports appear to be incorrect because one would expect that more than 183 cell phone users would develop cancer. In fact, the study may offer significant evidence to suggest that cell phone use decreases the probability of developing cancer. B. The media reports appear to be correct because one would expect that more than 156 cell phone users would develop cancer and the study offers significant evidence to support this. C. The media reports appear to be correct because one would expect that less than 183 cell phone users would develop cancer and the study offers significant evidence to support this.
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