sal2017 sal2017
  • 25-09-2018
  • Mathematics
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A certain virus infects one in every 300 people. A test used to detect the virus in a person is positive 70% of the time when the person has the virus and 15% of the time when the person does not have the virus.

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Аноним Аноним
  • 25-09-2018

when is only 10 % i thing thats right

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