Question 1064199
Samples of spinal fluids are routinely tested for the presence of tuberculosis (TB) and bacteria. Suppose that 80% of the samples attest negative for both TB and bacteria. What is the probability that a random sample tests positive for either TB or bacteria?
-------
P(TB or bact) + P(not TB or bact) = 1
P(TB or bact) = 1-0.8 = 0.2
-------------------------
Cheers,
Stan H.
-----------