An outbreak of gastritis occurred on a cruise ship. The data in the table below were obtained from a questionnaire completed by everyone on board the ship shortly after the outbreak.
An outbreak of gastritis occurred on a cruise ship. The data in the table below were obtained from a questionnaire completed by everyone on board the ship shortly after the outbreak.
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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An outbreak of gastritis occurred on a cruise ship. The data in the table below were obtained from a questionnaire completed by everyone on board the ship shortly after the outbreak.
| People who ate food | People who did not eat food | |||
| Food | Sick | well | Sick | Well |
| Herring | 200 | 800 | 100 | 900 |
| Chicken | 650 | 350 | 100 | 900 |
| Spinach soufflé | 200 | 800 | 500 | 500 |
| Oysters | 300 | 700 | 400 | 600 |
| Chocolate mousse |
600 | 400 | 450 | 550 |
A) what is the most likely infective food on the cruise ship?
B) what is the relative risk of developing gastritis from herring consumption?
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