document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=900743>Question 900743</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The manager of a gym has determined that the length of time members spend training at the gym is normally distributed with a mean of 80 minutes and a standard deviation of 20 minutes. What percentage of members spend more than 2 hours training at the gym? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #546102 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=546102\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The manager of a gym has determined that the length of time members spend training at the gym is normally distributed with a mean of 80 minutes and a standard deviation of 20 minutes. What percentage of members spend more than 2 hours training at the gym?<BR>\n" );
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document.write( "2 hrs = 120 minutes<BR>\n" );
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document.write( "z(120) = (120-80)/20 = 2<BR>\n" );
document.write( "P(x > 120) = P(z > 2) = normalcdf(2,100) = 0.0228 = 2.28%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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