SOLUTION: It is known that 40% of the animals in a farm inoculated with a serum are protected from a certain disease. If five of the animals are inoculated, find the probability that none of

Question 513622: It is known that 40% of the animals in a farm inoculated with a serum are protected from a certain disease. If five of the animals are inoculated, find the probability that none of them contracts the disease?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
It is known that 40% of the animals in a farm inoculated with a serum are protected from a certain disease. If five of the animals are inoculated, find the probability that none of them contracts the disease?
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P(protected) = 0.4
P(not protected) = 0.6
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Ans: P(no disease for 5) = 0.4^5 = 0.0102 = 1.02%
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Cheers,
Stan H.
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