document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=387010>Question 387010</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello,<BR>\n" );
document.write( " My question is: A national test has a mean of 400 and S.D. of 50. What is the prob. a score is greater than 500?\r<BR>\n" );
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document.write( "Thanks so much!!<BR>\n" );
document.write( "Amy </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #273537 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=273537\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> My question is: A national test has a mean of 400 and S.D. of 50. What is the prob. a score is greater than 500? <BR>\n" );
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document.write( "z(500) = (500-400)/50 = 2<BR>\n" );
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document.write( "P(x > 500) = P(z > 2) = 0.0228<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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