document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464796>Question 464796</A>: <I><SPAN STYLE=\"word-break: break-all;\"> it was found that 25% of all applicants for a position scored less than 160 points on an aptitude test. the standard deviation of the scores was 25. if the distribution score was normally distributed, what was the mean score </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #318431 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=318431\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> it was found that 25% of all applicants for a position scored less than 160 points on an aptitude test. the standard deviation of the scores was 25. if the distribution score was normally distributed, what was the mean score<BR>\n" );
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document.write( "Find the z-score with a left tail of 0.25.<BR>\n" );
document.write( "invNorm(0.25) = -0.6745<BR>\n" );
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document.write( "Using x = zs+u, solve for \"u\":<BR>\n" );
document.write( "160 = -0.6745*25 + u<BR>\n" );
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document.write( "u = 160 + 16.8622<BR>\n" );
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document.write( "u = 176.8622<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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