SOLUTION: In testing a new drug, researchers found that 1% of all patients using it will have a mild side effect. A random sample of 12 patients using the drug is selected. Find the probabil

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Question 402640: In testing a new drug, researchers found that 1% of all patients using it will have a mild side effect. A random sample of 12 patients using the drug is selected. Find the probability that:

(A) exactly two will have this mild side effect
(B) at least one will have this mild side effect.
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
(A) 12C2%2A%280.99%29%5E10%2A%280.01%29%5E2+=+0.005969, to 2 decimal places.
(B) 1+-+12C0%2A%280.99%29%5E12%2A%280.01%29%5E0+=+0.1136, to 4 decimal places.