SOLUTION: 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
Algebra.Com
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?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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.
-----------
RELATED QUESTIONS
Inspectors for the Fulton County Health Department routinely check food samples for the... (answered by Boreal)
To reduce laboratory costs, water samples from four public swimming pools are combined (answered by Boreal)
the orange county department of public health tests water for contamination due to the... (answered by stanbon)
A local grocery store tested spinach samples for E coli bacteria using two different... (answered by ikleyn)
Type O blood is found in 44% of Americans. Suppose 7 samples of blood are tested at... (answered by xdragonfight)
Type O blood is found in 44% of Americans. Suppose 7 samples of blood are tested at... (answered by rothauserc,mathmate)
The faculty and staff at Dana-Farber Cancer Institute in Boston are required to undergo a (answered by Boreal)
Pouches of specialty chemicals are tested for presence of impurities a or b, which render (answered by mathmate)
You are a system administrator for a company that runs all their business on three... (answered by ikleyn)