document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=665554>Question 665554</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose the monthly charge for cell phone plans is normally distributed with a mean of $62 and a standard deviation of $18.<BR>\n" );
document.write( "1. What percent of the cell plans would be above two standard deviations above the mean?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #413911 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=413911\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Suppose the monthly charge for cell phone plans is normally distributed with a mean of $62 and a standard deviation of $18.<BR>\n" );
document.write( "1. What percent of the cell plans would be above two standard deviations above the mean? <BR>\n" );
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document.write( "Note: That percent does not depend on the value of the mean or the value<BR>\n" );
document.write( "of the standard deviation.  It is always the percent of the distribution<BR>\n" );
document.write( "above z = 2<BR>\n" );
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document.write( "P(z > 2) = normalcdf(2,100) = 0.0228<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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