To the nearest two decimals, what is the probability of Renal Disease given Negative Test Results

Question

truth positive negative total

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renal disease 44 23 67

healthy 10 60 70

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total 54 83 137

I asked this question before and received the answer of 23/83 (or 0.27 as a decimal) from someone, when I put it in my quiz for class it was incorrect. please help!!

Answer 1

Lesson 4: Conditional Probability (psu.edu)

Mia

I answered this before, as 23/83 which is correct. To 2 decimal places this is 0.28 (possibly I misread the accuracy).

We know the test results were negative, so that is 83 patients. Of these 23 had renal disease so the probability must be 23/83.

You can follow the above link which talks about conditional probability using the same data.

Mike