Cysts ​ After Researching Cysts of a Particular Type,a Doctor

question 149

Short Answer

Cysts
​ After researching cysts of a particular type,a doctor learns that out of 10,000 such cysts examined,1,500 are malignant and 8,500 are benign.A diagnostic test is available which is accurate 80% of the time (whether the cyst is malignant or not).The doctor has discovered the same type of cyst in a patient. ​ ​
-{Cysts Narrative} In the absence of any test,what is the probability that the cyst is malignant?

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