document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=426852>Question 426852</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 20% of population have blue eyes, and 5 people are selected at random, what is the probability that at least 4 of them have blue eyes? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296853 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "probability of having blue eye = 20% = 20/100 = 1/5\r<BR>\n" );
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document.write( "probability of not having blue eyes = 1 - 1/5 =  4/5\r<BR>\n" );
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document.write( "probability of at least 4 have blue eyes =\r<BR>\n" );
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document.write( "probability of exactly 4 have blue eyes + probability of exactly 5 have blue \r<BR>\n" );
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document.write( "= 5C4*(1/5)^4*(4/5)^1  + 5C5*(1/5)^5*(4/5)^0\r<BR>\n" );
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document.write( "=  5C4*(1/5)^4*(4/5)^1  + 5C5*(1/5)^5\r<BR>\n" );
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document.write( " </SPAN>\n" );
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