document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=364423>Question 364423</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 20-member club has an equal number of freshmen, sophomores, juniors, and<BR>\n" );
document.write( "seniors. If 5 members are selected at random, what is the probability that at<BR>\n" );
document.write( "least 4 will be seniors? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #259924 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=259924\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A 20-member club has an equal number of freshmen, sophomores, juniors, and<BR>\n" );
document.write( "seniors. If 5 members are selected at random, what is the probability that at<BR>\n" );
document.write( "least 4 will be seniors?<BR>\n" );
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document.write( "Binomial problem with n = 5 and p(senior) = 1/4<BR>\n" );
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document.write( "P(4<=x<=5) = 5C4(1/4)^4*(3/4) + 5C5(1/4)^5(3/4)^0<BR>\n" );
document.write( "= 0.0156<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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