document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1113531>Question 1113531</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Statistics. Please help. Thankyou in advance!<BR>\n" );
document.write( "Suppose the scores for a college entrance examinations are normally distributed with mean 75 and standard deviation equal to 10. What proportions of the applicants will get scores in the college entrance exam between 70 and 90? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #728598 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=728598\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z test<BR>\n" );
document.write( "z=(x-mean)/sd<BR>\n" );
document.write( "for 70, the z is (70-75)/10=-0.5<BR>\n" );
document.write( "for 90, the z is (90-75)/10=+1.5<BR>\n" );
document.write( "from the table or calculator, the probability of z between -0.5 and +1.5 is 0.6247 </SPAN>\n" );
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