document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257929>Question 257929</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2) The type of people watching a film at a cinema is shown in the table.\r<BR>\n" );
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document.write( "----------Male---Female\r<BR>\n" );
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document.write( "Adult-----21------14\r<BR>\n" );
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document.write( "Child-----10------5\r<BR>\n" );
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document.write( "Two of these people are chosen at random to receive free cinema tickets.\r<BR>\n" );
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document.write( "Calculate the probability that two chosen people are adults of the same gender.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189790 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=189790\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The type of people watching a film at a cinema is shown in the table. <BR>\n" );
document.write( "----------Male---Female---Total <BR>\n" );
document.write( "Adult-----21------14--------35 <BR>\n" );
document.write( "Child-----10------5---------15<BR>\n" );
document.write( "Total-----31------19--------50\r<BR>\n" );
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document.write( "Two of these people are chosen at random to receive free cinema tickets. <BR>\n" );
document.write( "Calculate the probability that two chosen people are adults of the same gender.<BR>\n" );
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document.write( "P[(2male or 2female)|adult) = P(2male|adult) + P(2female|adult) = [21C2+14C2]/35C2<BR>\n" );
document.write( "= [210 + 91]/[595] = 301/595 = 0.51<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H </SPAN>\n" );
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