document.write( "Question 611582: In testing a new drug, researchers found that 5% 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:
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\n" ); document.write( "(A) exactly three will have this mild side effect
\n" ); document.write( "(B) at least two will have this mild side effect.
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Algebra.Com's Answer #385046 by stanbon(75887)\"\" \"About 
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In testing a new drug, researchers found that 5% of all patients using it will have a mild side effect. A random sample of 13 patients using the drug is selected.
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\n" ); document.write( "\n" ); document.write( "Find the probability that: \r
\n" ); document.write( "\n" ); document.write( "(A) exactly three will have this mild side effect
\n" ); document.write( "P(x = 3) = 13C3*0.05^3*(0.95)^0 = 0.02140
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\n" ); document.write( "(B) at least two will have this mild side effect.
\n" ); document.write( "P(2<= x <=3) = 1 - binomcdf(13,0.05,1) = 0.1354
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