document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1157069>Question 1157069</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean of a normal probability distribution is 80; the standard deviation is 6. <BR>\n" );
document.write( "About what percent of the observations lie between 68 and 92? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #779881 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=779881\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> About means estimate<BR>\n" );
document.write( "'68 is two sd s from 80 -2 z score'<BR>\n" );
document.write( "92 is two sd s from 80 +2 z score<BR>\n" );
document.write( "-2 and +2 sd s have about 95% of the observations. It is about 95 (it is exactly 95.44%) </SPAN>\n" );
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