document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=388055>Question 388055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A restaurant owner has researched his daily sales over the past year and found the mean daily sales to be $850, with a standard deviation of $325. Based upon the restaurant owner's analysis: <BR>\n" );
document.write( "a. what percent of daily sales are less than $600?<BR>\n" );
document.write( "b. what percent of daily sales are between $700 and $1000?<BR>\n" );
document.write( "c. what percent of sales are between $1000 and $1200<BR>\n" );
document.write( "d. what amount of sales separates the top 10 percent from the lower 90 percent?<BR>\n" );
document.write( " <BR>\n" );
document.write( "Any hlep will be greatly appreciated... I will do the $5 donation if this can be completed by today at 7CST.  Thank you in advance </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #274375 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=274375\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the z scores.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28x-mu%29%2Fsigma ALIGN=MIDDLE  ALT=\"z=%28x-mu%29%2Fsigma\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "a) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28600-850%29%2F325=-0.7692 ALIGN=MIDDLE  ALT=\"z=%28600-850%29%2F325=-0.7692\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28x%3C600%29=P%28-0.7692%29 ALIGN=MIDDLE  ALT=\"P%28x%3C600%29=P%28-0.7692%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "b) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B1%5D=%28700-850%29%2F325 ALIGN=MIDDLE  ALT=\"z%5B1%5D=%28700-850%29%2F325\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B2%5D=%281000-850%29%2F325 ALIGN=MIDDLE  ALT=\"z%5B2%5D=%281000-850%29%2F325\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28700%3Cx%3C1000%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29 ALIGN=MIDDLE  ALT=\"P%28700%3Cx%3C1000%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "c) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B1%5D=%281000-850%29%2F325 ALIGN=MIDDLE  ALT=\"z%5B1%5D=%281000-850%29%2F325\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B2%5D=%281200-850%29%2F325 ALIGN=MIDDLE  ALT=\"z%5B2%5D=%281200-850%29%2F325\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%281000%3Cx%3C1200%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29 ALIGN=MIDDLE  ALT=\"P%281000%3Cx%3C1200%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "d) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z%29=0.90 ALIGN=MIDDLE  ALT=\"P%28z%29=0.90\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Working backwards, find the z score that give <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z%29=0.90 ALIGN=MIDDLE  ALT=\"P%28z%29=0.90\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=1.281552 ALIGN=MIDDLE  ALT=\"z=1.281552\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now find the x value that gives you that z score.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28x-850%29%2F325=1.281552 ALIGN=MIDDLE  ALT=\"z=%28x-850%29%2F325=1.281552\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );