document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=425948>Question 425948</A>: <I><SPAN STYLE=\"word-break: break-all;\">    Using this chart below can you help me figure out if you select a student at random What is the probability of selecting a female student? I am having trouble with probability. Thanks!                              \r<BR>\n" );
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document.write( "                                     Major<BR>\n" );
document.write( "Gender         Biology       Anatomy         Chemistry            Total<BR>\n" );
document.write( "Male             105           140               47                 292<BR>\n" );
document.write( "Female           103           25                52                  180<BR>\n" );
document.write( "Total            208           165               99                 472 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296417 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=296417\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Using this chart below can you help me figure out if you select a student at random What is the probability of selecting a female student? I am having trouble with probability. Thanks!                              \r<BR>\n" );
document.write( "\n" );
document.write( "                                     Major<BR>\n" );
document.write( "Gender         Biology       Anatomy         Chemistry            Total<BR>\n" );
document.write( "Male             105           140               47                 292<BR>\n" );
document.write( "Female           103           25                52                  180<BR>\n" );
document.write( "Total            208           165               99                 472<BR>\n" );
document.write( "----<BR>\n" );
document.write( "P(female) = 180/472<BR>\n" );
document.write( "P(biology|female) = 103/180<BR>\n" );
document.write( "P(male|anatomy) = 140/165<BR>\n" );
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document.write( "These are not difficult once you see the pattern.<BR>\n" );
document.write( "When you have P(a|b) the number in \"b\" becomes the denominator.<BR>\n" );
document.write( "The number of \"a's\" in b becomes the numerator.<BR>\n" );
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document.write( "Hope that helps<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );