Q214 · Practice questionTechnology-freeComplex familiar5 marks
QUESTION 214 (5 marks)
A screening test has sensitivity and specificity . In the tested population, have the condition.
a)[2 marks]
Find the probability that a randomly selected person tests positive.
b)[3 marks]
Find the probability that a person actually has the condition given a positive result.
WORKED SOLUTION
5 marksPractice marking scheme
ANSWER
(condition|+).
Worked solution
Part (a): .
Part (b): (condition|+).
Part (a): completes the requested reasoning and obtains a correct result.
Part (b): completes the requested reasoning and obtains a correct result.
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