document.write( "Question 471567: When treated with an Antibiotic, 91% of all the dolphins are cured of an ear infection. If 5 dolphins are treated, find the probablity that exactly 4 are cured? \n" ); document.write( "

Algebra.Com's Answer #323430 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Note: The probability of x successes in n trials is: 
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document.write( "P = nCx*  where p and q are the probabilities of success and failure respectively. 
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document.write( "In this case p(cured) =.91 and q = .09
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document.write( "nCx = 
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document.write( "5 dolphins treated  n = 5
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document.write( "P(exactly 4 cured) = 5C4(.91)^4(.09) = 5(.91)^4(.09)= .3086 \n" );
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