document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1152776>Question 1152776</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The scores on a college entrance examination are normally distributed with a mean of 550 and standard deviation of 100. For a sample of 30 students what is the probability that the sample:  \r<BR>\n" );
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document.write( "1. Has a mean less than 575?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #774905 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=774905\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(xbar-mu)/sd/sqrt(n)<BR>\n" );
document.write( "z=25/100/sqrt(30)<BR>\n" );
document.write( "=1.37<BR>\n" );
document.write( "want probability z <1.37<BR>\n" );
document.write( "0.9147 </SPAN>\n" );
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