document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=522706>Question 522706</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Students took an Algebra 2/Trig Test with a mean of 87.5% with a standard deviation of 4.5%.<BR>\n" );
document.write( "What is the probability that a student scored between 84 and 100%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346993 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=346993\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Students took an Algebra 2/Trig Test with a mean of 87.5% with a standard deviation of 4.5%.<BR>\n" );
document.write( "What is the probability that a student scored between 84 and 100%?<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "z(84) = (84-87.5)/4.5 = -0.7778<BR>\n" );
document.write( "---<BR>\n" );
document.write( "z(100) = (100-87.5)/4.5 = 2.7778<BR>\n" );
document.write( "----<BR>\n" );
document.write( "P(84 <= x <=100) = P(-0.7778 <= z <= 2.778) = 0.7789<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );