document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=598971>Question 598971</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A standardized test has a mean of 600 and a standard deviation of 75. If 1000 students took the test and their scores approximate a normal curve, how many scored between 600 and 750? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #378748 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=378748\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A standardized test has a mean of 600 and a standard deviation of 75. If 1000 students took the test and their scores approximate a normal curve, how many scored between 600 and 750?<BR>\n" );
document.write( "----<BR>\n" );
document.write( "z(600) = (600-600)/75 = 0<BR>\n" );
document.write( "z(750) = (750-600) = 150/75 = 2<BR>\n" );
document.write( "----<BR>\n" );
document.write( "P(600< x <750) = P(0< z <2) = 0.4772<BR>\n" );
document.write( "----<BR>\n" );
document.write( "# of scores = 0.4772*1000 ~ 477<BR>\n" );
document.write( "====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );