document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1157196>Question 1157196</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a survey of 500 Latin music downloads in a certain year, 250 were regional (Mexican/Tejano), 160 were pop-rock, 80 were tropical (salsa/merengue/cumbia/bachata), and 10 were urban (reggaeton). Calculate the following relative frequencies. (Round your answers to two decimal places.) \r<BR>\n" );
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document.write( "(a) a music download was regional?\r<BR>\n" );
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document.write( "(b) a music download was either tropical or urban?\r<BR>\n" );
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document.write( "(c) a music download was not urban? <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 #780116 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=780116\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> regional would be 250/500 or 0.50<BR>\n" );
document.write( "tropical  or urban would be the sum or 80+10=90, probability is 90/500 or 0.18<BR>\n" );
document.write( "not urban would be 1- probability (urban)=1-10/500 or 0.98. </SPAN>\n" );
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