document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=549048>Question 549048</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a class of 15 people exactly 3 got A's.  If two people are randomly chosen from this class, what is the probability that at least one of these two people got and A? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #357500 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=357500\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a class of 15 people exactly 3 got A's. If two people are randomly chosen from this class, what is the probability that at least one of these two people got and A?<BR>\n" );
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document.write( "P(at least 1 got A) = 1 - P(none got A)<BR>\n" );
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document.write( "P(none got A) = 12C2/15C2 = 0.6286<BR>\n" );
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document.write( "P(at least 1 got A) = 1 - 0.6286 = 0.3714<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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