SOLUTION: It is known that a certain drug causes side effects in 12% of patients. If we consider a random sampling of 12 patients, what is the probability less than two have the side effect?

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Question 1116824: It is known that a certain drug causes side effects in 12% of patients. If we consider a random sampling of 12 patients, what is the probability less than two have the side effect?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28X%29=C%2812%2CX%29%2A%280.12%29%5EX%2A%281-0.12%29%5E%2812-X%29
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Less than two means.
P%28X%3C2%29=P%280%29%2BP%281%29
P%28X%3C2%29=0.56859