document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1124615>Question 1124615</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a population of exam scores, a score of X=28 correspond to z= -1.00, and a score of X=34 corresponds  to z= -0.50. Find the mean and standard deviation for the population </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #740935 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=740935\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "-1=(28-mean)/sd<BR>\n" );
document.write( "-sd=28-mean<BR>\n" );
document.write( "mean-sd=28<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "-0.5=(34-mean)/sd<BR>\n" );
document.write( "-0.5sd=34-mean<BR>\n" );
document.write( "mean-0.5 sd=34\r<BR>\n" );
document.write( "\n" );
document.write( "mean-sd=28<BR>\n" );
document.write( "-mean+0.5sd=-34<BR>\n" );
document.write( "-0.5sd=-6<BR>\n" );
document.write( "sd=12 ANSWER<BR>\n" );
document.write( "therefore, mean=40 ANSWER </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );