document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=355015>Question 355015</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a certain high-risk group, the chances of a person having suffered a heart attack are 55%. If 6 people are chosen, find the probability that at least 1 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 #253575 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=253575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a certain high-risk group, the chances of a person having suffered a heart attack are 55%. If 6 people are chosen, find the probability that at least 1 will have had a heart attack.<BR>\n" );
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document.write( "Binomial Problem with n=6 and p= 0.55<BR>\n" );
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document.write( "P(at least one) = 1 - P(none)<BR>\n" );
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document.write( "P(at least one has a heart attack) = 1 - P(none of 6 has a heart attack)<BR>\n" );
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document.write( "= 1 - 0.45^6<BR>\n" );
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document.write( "= 1 - 0.0083<BR>\n" );
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document.write( "= 0.9917<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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