In a study of 441,193 cell phone users, it was found that 76 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000209 probability of a person developing cancer of the brain or nervous system. We therefore expect about 93 cases of such cancer in a group of 441,193 people. Estimate the probability of 76 or fewer cases of such cancer in a group of 441,193 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(xs76) = (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports? O A. The media reports appear to be correct because one would expect that less than 93 cell phone users would develop cancer and the study offers some evidence to support this. O B. The media reports appear to be incorrect because one would expect that more than 93 cell phone users would develop cancer. In fact, the study may offer some evidence to suggest that cell phone use decreases the probability of developing cancer. O C. The media reports appear to be correct because one would expect that more than 76 cell phone users would develop cancer and the study offers some evidence to support this.
In a study of 441,193 cell phone users, it was found that 76 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000209 probability of a person developing cancer of the brain or nervous system. We therefore expect about 93 cases of such cancer in a group of 441,193 people. Estimate the probability of 76 or fewer cases of such cancer in a group of 441,193 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? (a) P(xs76) = (Round to four decimal places as needed.) (b) What does the result from part (a) suggest about the media reports? O A. The media reports appear to be correct because one would expect that less than 93 cell phone users would develop cancer and the study offers some evidence to support this. O B. The media reports appear to be incorrect because one would expect that more than 93 cell phone users would develop cancer. In fact, the study may offer some evidence to suggest that cell phone use decreases the probability of developing cancer. O C. The media reports appear to be correct because one would expect that more than 76 cell phone users would develop cancer and the study offers some evidence to support this.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:**Study Overview:**
In a study of 441,193 cell phone users, it was found that 76 people developed cancer of the brain or nervous system. Assuming cell phones have no effect, there is a 0.000209 probability of a person developing such cancer. We therefore expect about 93 cases in a group of 441,193 people. Estimate the probability of 76 or fewer cases occurring in this group.
**Questions:**
(a) Calculate P(X ≤ 76).
(Round to four decimal places as needed.)
(b) Analyze what the result from part (a) suggests about media reports that cell phones cause cancer of the brain or nervous system:
- **A.** The media reports appear to be correct because one would expect that less than 93 people would develop cancer, and the study offers some evidence to support this.
- **B.** The media reports appear to be incorrect because one would expect that more than 93 people would develop cancer. In fact, the study may offer some evidence to suggest that cell phone use decreases the probability of developing cancer.
- **C.** The media reports appear to be correct because one would expect that more than 76 people would develop cancer and the study offers some evidence to support this.
**Image Details:**
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