document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1049554>Question 1049554</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Every normal model is defined by its parameters: the mean and the standard deviation. For each model describe below, find the missing parameter and draw a picture\r<BR>\n" );
document.write( "\n" );
document.write( "1) mean =1250, 35%below 1200, find standard deviation\r<BR>\n" );
document.write( "\n" );
document.write( " b) Draw and show the rule of 3 with the parameter above\r<BR>\n" );
document.write( "\n" );
document.write( "c) standard deviation =0.5, 72% above 10.0 find the mean\r<BR>\n" );
document.write( "\n" );
document.write( "d) mean =0.64, 32% above 0.70, find standard deviation  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #665123 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=665123\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Need to Know<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28x+-+mu%29%2Fblue%28sigma%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28x+-+mu%29%2Fblue%28sigma%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "a)  u = 1250 &  35% below 1200<BR>\n" );
document.write( "find &#963; <BR>\n" );
document.write( "z = invNorm(.35) = -.3853\r<BR>\n" );
document.write( "\n" );
document.write( "&#963;  = (1200 - 1250)/-.3853 = 129.6<BR>\n" );
document.write( "|<BR>\n" );
document.write( "c) x = 10<BR>\n" );
document.write( "z = invNorm(.28) Below <BR>\n" );
document.write( "find &#956;<BR>\n" );
document.write( "&#956; =   10 - &#963;*z <BR>\n" );
document.write( "|<BR>\n" );
document.write( "d) x = .7, &#956; = .64<BR>\n" );
document.write( "find &#963; <BR>\n" );
document.write( "z = invNorm(.68)  Below<BR>\n" );
document.write( "&#963; = (.7-.64)/z </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );