document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=820166>Question 820166</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A manufacturer of headache medicine claims it is 80 percent effective within a few minutes. That is, out of every 100 users 80 get relief within a few minutes. A group of 12 patients are given the medicine. If the claim is true, what is the probability that 8 have relief within a few minutes?\r<BR>\n" );
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document.write( "I TRUELY DO NOT UNDERSTAND THIS QUESTION. I DONT EVEN KNOW WHAT FORMULA TO PUT IT IN. I have tried the binomial way but don't understand where the numbers are suppose to go. Please help me with this. thank you so much  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #493413 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=493413\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A manufacturer of headache medicine claims it is 80 percent effective within a few minutes. That is, out of every 100 users 80 get relief within a few minutes. A group of 12 patients are given the medicine. If the claim is true, what is the probability that 8 have relief within a few minutes?<BR>\n" );
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document.write( "Binomial Problem with n = 12 and p(relief) = 0.8<BR>\n" );
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document.write( "P(x = 8) = 12C8(0.8)^8(0.2)^4 <BR>\n" );
document.write( "= 495*0.1678*0.0016 <BR>\n" );
document.write( "= binompdf(12,0.8,8)<BR>\n" );
document.write( "= 0.1329<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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