document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1118736>Question 1118736</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A new drug has been found to be effective in treating 75% of the people afflicted by a certain disease. If the drug is administered to 400 people who have this disease, what are the mean and the standard deviation of the number of people for whom the drug can be expected to be effective? (Round your standard deviation to two decimal places.)<BR>\n" );
document.write( "mean	  people<BR>\n" );
document.write( "standard deviation     	  people<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #734170 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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/cgi-bin/show-face.mpl?user=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=734170\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> So you are looking at a binomial distribution with n=400 and p=0.75<BR>\n" );
document.write( "Mean: &#956; = np = 400*0.75 = 300<BR>\n" );
document.write( "Standard Deviation: &#963; = &#8730;npq = &#8730;400*0.75*0.25 = 8.66 </SPAN>\n" );
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