Suppose a lab is developing a robust new test to look for diabetes in children

Question

Suppose a lab is developing a robust new test to look for diabetes in children. If a child actually has diabetes, the probability that the test will be positive is 80%, indicating they have diabetes. If the child does not have diabetes, the probability that the test will be positive is 10%. Suppose 5.5% of all children actually have diabetes. (Round your answer to 3 decimal places, if needed.)

a) What is the probability that a randomly chosen child has diabetes and tested positive?

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b) What is the probability that a randomly chosen child tested positive?

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c) Given that a test comes up positive, what is the probability the child has diabetes?

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d) What is the probability that a randomly chosen child does not have diabetes and tested negative?

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e) What is the probability that a randomly chosen child tested negative?

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f) Given that a test comes up negative, what is the probability the child does not have diabetes?

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Answer 1