document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=929386>Question 929386</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The results of a departmental math final exam at a local college showed the scores were normally distributed with a mean score of 40 points and a standard deviation of 20 point. \r<BR>\n" );
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document.write( "1.) What percentage of students scored over 60 points \r<BR>\n" );
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document.write( "2.) What percentage of students scored between 30 points and 50 points? \r<BR>\n" );
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document.write( "3.) What percentage of students scored below 10 points?   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #564245 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=564245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean = 40 , SD = 20 , <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=+blue%28x+-+40%29%2Fblue%2820%29 ALIGN=MIDDLE  ALT=\"z+=+blue%28x+-+40%29%2Fblue%2820%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "P(x > 60) = P(z > 20/20)= normalcdf(1,100) = .1587  0r 15.87%<BR>\n" );
document.write( "P(30 < x < 50) = P(-10/20 < z < 10/20) = normalcdf(-1,1) = .6827 0r 68.27%<BR>\n" );
document.write( "P(x < 10) = P(z < -30/20) = normalcdf(-100, -3/2) = .0668 0r 6.68% </SPAN>\n" );
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