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2 Statistics

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Question 202

A screening test is used on a population in which 4% of people have a condition. The test gives a positive result for 92% of people with the condition and for 6% of people without it.

a.

Find the probability that a randomly selected person tests positive.

[2]
b.

Given that a person tests positive, find the probability that the person has the condition.

[3]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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