document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=562981>Question 562981</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in a sample of 10,000 observations, about how many observations would you expect beyond 3 standard deviations of mean? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #364752 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=364752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in a sample of 10,000 observations, about how many observations would you expect beyond 3 standard deviations of mean?<BR>\n" );
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document.write( "Find the probability in the two tails.<BR>\n" );
document.write( "That probability = 2*normalcdf(3,100) = 0.0027<BR>\n" );
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document.write( "# of observations in those tails = 0.0027*10,000 = 27<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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