Determining the absence of the disease

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It is known that a rare disease, K, is present only in 0.2% of the population. Performance of the test by a physician's diagnostic test for the presence or absence of the disease K is given in Table, where R+ denotes the positive test result, and R- denotes the negative result. Also, Kc denotes absence of the disease.

Table

 

R+

R-

K

0.98

0.02

Kc

0.01

0.99

(a) What is the probability that a patient has the disease, if the test result is positive?

(b) What is the probability that a patient has the disease, if the test result is negative?

Reference no: EM13963665

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