Is this right? Can someone help? Noroviruses cause roughly 21 million cases of g

Question

Is this right? Can someone help?

Noroviruses cause roughly 21 million cases of gastroenteritis ("stomach flu") annually in the United States. A study examined the effectiveness of a new norovirus vaccine. Healthy adult volunteers received, at random, either the vaccine or a placebo. They were then exposed to the norovirus. In all, 14 of the 38 vaccinated subjects suffered from gastroenteritis compared with 27 of the 39 subjects who received a placebo. Does this study provide evidence that an outcome of gastroenteritis depends on the treatment received? The proportion of gastroenteritis in the entire studyis 0.692 0.532 0.368. 0.500

Explanation / Answer

Proportion of gastroenteritis in entire study

14 of 38 vaccinated subjects suffered from gastroenteritis.

14/38 = 0.368

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