document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1133710>Question 1133710</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A distribution of values is normal with a mean of 170 and a standard deviation of 2.\r<BR>\n" );
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document.write( "1. Find the interval containing the middle-most 38% of scores.\r<BR>\n" );
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document.write( "Enter your answer using interval notation. Example: [2.1,5.6) <BR>\n" );
document.write( "Your numbers should be accurate to 1 decimal places. <BR>\n" );
document.write( "Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #750951 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=750951\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The middle 38% of scores is 19% on each side of the mean or between 0.3100 and 0.6900.<BR>\n" );
document.write( "This is between z=-0.495 and z=+0.495<BR>\n" );
document.write( "z=(x-mean)/sd<BR>\n" );
document.write( "-0.495=(x-170)/2<BR>\n" );
document.write( "-.99=x-170<BR>\n" );
document.write( "x=169.01 lower<BR>\n" );
document.write( "x=170.99 higher<BR>\n" );
document.write( "[169.01, 170.99] or [169.0, 171.0] </SPAN>\n" );
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