document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=969402>Question 969402</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My question is....<BR>\n" );
document.write( "A survey taken during class revealed 30% of the students in a class bring their lunch to school. If the probability that a randomly selected student is a boy given that the student bring their lunch is 40%, what is the probability that a randomly selected student will be a boy that brings his lunch to school?<BR>\n" );
document.write( "A. 70%<BR>\n" );
document.write( "B. 10%<BR>\n" );
document.write( "C. 12%<BR>\n" );
document.write( "D. 75% \r<BR>\n" );
document.write( "\n" );
document.write( "I think the answer is C. 12%. But, I would just like to make sure.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #592312 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=592312\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A survey taken during class revealed 30% of the students in a class bring their lunch to school. If the probability that a randomly selected student is a boy given that the student bring their lunch is 40%, what is the probability that a randomly selected student will be a boy that brings his lunch to school?<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "P(boy |lunch) = P(boy and lunch)/P(lunch) = 0.40<BR>\n" );
document.write( "---<BR>\n" );
document.write( "P(boy and lunch) = P(lunch)*0.4 = 0.3*0.4 = 0.12<BR>\n" );
document.write( "----<BR>\n" );
document.write( "You are correct<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "----------- <BR>\n" );
document.write( "A. 70%<BR>\n" );
document.write( "B. 10%<BR>\n" );
document.write( "C. 12%<BR>\n" );
document.write( "D. 75%  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );