SOLUTION: In testing a new drug, researchers found that 4% of all patients using it will have a mild side effect. A random sample of 13 patients using the drug is selected. Find the probabil

Question 667998: In testing a new drug, researchers found that 4% of all patients using it will have a mild side effect. A random sample of 13 patients using the drug is selected. Find the probability that exactly two will have this mild side effect.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In testing a new drug, researchers found that 4% of all patients using it will have a mild side effect. A random sample of 13 patients using the drug is selected. Find the probability that exactly two will have this mild side effect.
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Binomial Problem with n = 13 ; p(effect) = 0.04 ; p(none) = 0.96
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P(x = 2) = 13C2*(0.04)^2*0.96^11 = binompdf(13,0.04,2) = 0.0797
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Cheers,
Stan H.
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