document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=446319>Question 446319</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The correct answer for this problem is not 21. I need help with this difficult homework equation. Can someone please show me how to come up with the CORRECT answer?\r<BR>\n" );
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document.write( "Suppose the life of a certain brand of vacuum cleaner is normally distributed with a mean life of 12 years and a standard deviation of 4 years. A vacuum cleaner is randomly chosen.\r<BR>\n" );
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document.write( "10. (3 points) For how many years should the manufacturer warranty its vacuum cleaners if it is willing to replace only 1% of the vacuum cleaners it sells (Round answer to the closest whole number). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #307584 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=307584\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> this is a z-score problem ___ solve it using a table ___www.regentsprep.org/Regents/math/algtrig/.../ZChart.htm\r<BR>\n" );
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document.write( "the question is asking how many standard deviations below the mean represents the lowest 1% of the population </SPAN>\n" );
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