document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464956>Question 464956</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 	In a certain high-risk group, the chance of a person having suffered a heart attack is 70%.  If four persons are chosen from the group, find the probability that at least one will have had a heart attack.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #318512 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=318512\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1-.7=.3<BR>\n" );
document.write( ".3^4=.0081 prob that none have a heart attack.<BR>\n" );
document.write( "1-.0081=.9919 the probability that at least one will have had a heart attack.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );