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19 votes
19 votes
Assume one individual from the group is randomly selected. Find the probability of getting someone who tests negative​, given that he or she had the disease. the probability is approximately?

User Ashmin Kaul
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1 Answer

27 votes
27 votes

Answer:


P(Negative | Yes) = 0.0486

Explanation:

Given


\begin{array}{ccc}{} & {Yes} & {No} & {Positive} & {137} & {24} & {Negative} & {7} & {132} \ \end{array}

Required


P(Negative | Yes)

This is calculated as:


P(Negative | Yes) = (n(Negative\ n\ Yes))/(n(Yes))

So, we have:


P(Negative | Yes) = (7)/(137+7)


P(Negative | Yes) = (7)/(144)


P(Negative | Yes) = 0.0486

User Lumbendil
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