document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=517787>Question 517787</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Of all the DVDs in a large shipment, 21% have a defective disc, 14% have a defective case, and 10% have both defects. If you purchase one of the DVDs in this shipment, find the probability that it has the following.\r<BR>\n" );
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document.write( "(b) a good disc or a good case </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #344912 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=344912\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Of all the DVDs in a large shipment, 21% have a defective disc, 14% have a defective case, and 10% have both defects. <BR>\n" );
document.write( "If you purchase one of the DVDs in this shipment, find the probability that it has the following. <BR>\n" );
document.write( "(b) a good disc or a good case<BR>\n" );
document.write( "P(good disc OR good case)=P(good disc)+P(good case)-P(good disc AND good case.<BR>\n" );
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document.write( "P(gd OR gc) = 0.79 + 0.84 - 0.90 = 0.73<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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