document.write( "Question 1164449: An experimental drug has been shown to be 75% effective in eliminating symptoms of allergies in animal tudies. A small human study involving six participants is conduted. What is the probability that the drug is effective on half of the participants? Thank you \n" ); document.write( "
Algebra.Com's Answer #788852 by ikleyn(52811)\"\" \"About 
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document.write( "It is the binomial type probability distribution.\r\n" );
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document.write( "The number of trial n= 6; the probability of the success trial is  0.75,  and the number of success trial k = 3. \r\n" );
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document.write( "    P = \"C%5B6%5D%5E3%2A0.75%5E3%2A%281-0.75%29%5E3\" = \"%28%286%2A5%2A4%29%2F%281%2A2%2A3%29%29%2A0.75%5E3%2A0.25%5E3\" = 0.1318 (rounded).     ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many other similar solved problems, look into the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Simple and simplest probability problems on Binomial distribution \r
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