document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=621444>Question 621444</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am not understanding...\r<BR>\n" );
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document.write( " A set of data is normally distributed with a mean of 100 and standard deviation of 15.  <BR>\n" );
document.write( "·         What would be the standard score for a score of 90?<BR>\n" );
document.write( "·         What percentage of scores is between 100 and 90?<BR>\n" );
document.write( "·         What would be the percentile rank for a score of 90? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390747 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=390747\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">   <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\"><font face = \"Tohoma\" size = 3 color = \"indigo\"><b> <BR>\n" );
document.write( "Hi,<BR>\n" );
document.write( "Note:  Bell shaped Curve showing placement of z = 0, z = ±1, 2, 3 <BR>\n" );
document.write( "Left or Right of z = 0 being 50% of the area under the standard normal curve...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C200%2C-5%2C5%2C-.5%2C1.5%2C+graph%28400%2C200%2C-5%2C5%2C-.5%2C1.5%2C+exp%28-x%5E2%2F2%29%29%2C+green%28line%281%2C0%2C1%2Cexp%28-1%5E2%2F2%29%29%2Cline%28-1%2C0%2C-1%2Cexp%28-1%5E2%2F2%29%29%29%2Cgreen%28line%282%2C0%2C2%2Cexp%28-2%5E2%2F2%29%29%2Cline%28-2%2C0%2C-2%2Cexp%28-2%5E2%2F2%29%29%29%2Cgreen%28line%283%2C0%2C3%2Cexp%28-3%5E2%2F2%29%29%2Cline%28-3%2C0%2C-3%2Cexp%28-3%5E2%2F2%29%29%29%2Cgreen%28line%28+0%2C0%2C+0%2Cexp%280%5E2%2F2%29%29%29%2Clocate%284.8%2C-.01%2Cz%29%2Clocate%284.8%2C.2%2Cz%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "As to A set of data is normally distributed with a mean of 100 and SD of 15. <span  DISABLED_style= \"text-decoration: overline\">X</span> = 90 <BR>\n" );
document.write( " z = (90-100)/15 =<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-.6667 ALIGN=MIDDLE  ALT=\"+-.6667\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Exel function NORMSDIST(-.6667) = .25 , 25% to the left and 75% to the right<BR>\n" );
document.write( "What percentage of scores is between 100 and 90? 25%<BR>\n" );
document.write( "· What would be the percentile rank for a score of 90? 25%<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C200%2C-5%2C5%2C-.5%2C1.5%2C+graph%28400%2C200%2C-5%2C5%2C-.5%2C1.5%2C+0%2Cexp%28-x%5E2%2F2%29%29%2C+blue%28line%28+-.6667%2C0%2C+-.6667%2Cexp%28-.6667%5E2%2F2%29%29%29%2Clocate%284.8%2C-.01%2Cz%29%2Clocate%284.8%2C.2%2Cz%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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