document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1048252>Question 1048252</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I could really use some help on this problem!\r<BR>\n" );
document.write( "\n" );
document.write( "A group of students at a school takes a history test. The distribution is normal with a mean of 25, and a standard deviation of 4. \r<BR>\n" );
document.write( "\n" );
document.write( "(a) Everyone who scores in the top 30% of the distribution gets a certificate. What is the lowest score someone can get and still earn a certificate? \r<BR>\n" );
document.write( "\n" );
document.write( "(b) The top 5% of the scores get to compete in a statewide history contest. What is the lowest score someone can get and still go onto compete with the rest of the state?\r<BR>\n" );
document.write( "\n" );
document.write( "Any assistance is appreciated, thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #663852 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=663852\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean of 25, and a standard deviation of 4.<BR>\n" );
document.write( "a) Use invNorm(.70) to find z = .5244<BR>\n" );
document.write( "*Note: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=+blue%28x+-+mu%29%2Fblue%28sigma%29 ALIGN=MIDDLE  ALT=\"z+=+blue%28x+-+mu%29%2Fblue%28sigma%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > 0r <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=blue%28sigma%29%2Az++%2B+mu+=+x ALIGN=MIDDLE  ALT=\"blue%28sigma%29%2Az++%2B+mu+=+x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "4(.5244) + 25 = 27.0976   Round up to  nearest whole number<BR>\n" );
document.write( "28, the lowest score someone can get and still earn a certificate <BR>\n" );
document.write( "|<BR>\n" );
document.write( "b) invNorm(.95) = 1.6449<BR>\n" );
document.write( "4(1.6449) + 25 = x , the lowest score someone can get and still go onto compete with the rest of the state?  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );