document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=245511>Question 245511</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 5 patients in a hospital are to undergo surgery in which the survival rate is 50%, what is the probability that---all will survive?  three will survive?<BR>\n" );
document.write( "more than half will survive? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #179329 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=179329\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let s=survivor and d=death<BR>\n" );
document.write( "s=.5, d=.5<BR>\n" );
document.write( "s^5=.5^5=.03125 all 5 survive.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "nCr*s^3d^2<BR>\n" );
document.write( "=5C3*.5^3.5^2<BR>\n" );
document.write( "=10*.125*.25<BR>\n" );
document.write( "=.3125 Three survive<BR>\n" );
document.write( ".<BR>\n" );
document.write( "nCr*s^4d <BR>\n" );
document.write( "5*.0625*.5<BR>\n" );
document.write( "=.15625 four survive.<BR>\n" );
document.write( ".03125+.15625+.3125<BR>\n" );
document.write( "=.5 more than 1/2 survive.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );