document.write( "Question 1203266: albino rats used to study the hormonal regulation of a metabolic pathway are injected with a drug that inhibits body synthesis of protein. Usually, 4 out of 20 rats die from the drug before the experiment is over. This time round, 10 animals are treated with the drug. What is the probability that 5 of these animals will die before the expiriment is over? \n" ); document.write( "

Algebra.Com's Answer #838691 by ikleyn(52908) $\"\"$ $\"About$

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document.write( "The binomial distribution with the number of trials n= 10;\r\n" );
document.write( "probability of \"success\" in each individual trial p=  =  = 0.2;\r\n" );
document.write( "and the number of \"successful\" trials k= 5.\r\n" );
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document.write( "Use the standard formula for the probability\r\n" );
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document.write( "   P =  =  = 0.02642.   (rounded).    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many other similar solved problems of this type, look into the lessons\r
\n" ); document.write( "\n" ); document.write( " - Simple and simplest probability problems on Binomial distribution \r
\n" ); document.write( "\n" ); document.write( " - Typical binomial distribution probability problems \r
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