document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1168129>Question 1168129</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.\r<BR>\n" );
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document.write( "Admissions	Probability<BR>\n" );
document.write( "1,400	.6<BR>\n" );
document.write( "1,500	.3<BR>\n" );
document.write( "1,200	.1\r<BR>\n" );
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document.write( "What is the expected number of admissions for the fall semester?\r<BR>\n" );
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document.write( "Compute the variance and the standard deviation of the number of admissions. (Round your standard deviation to 2 decimal places.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #792747 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=792747\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> E(X)=sum of x*p(x)<BR>\n" );
document.write( "=840+450+120=1410 adm<BR>\n" );
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document.write( "variance is sum of (X-x)^2*p(x)<BR>\n" );
document.write( "=100*0.6+2430+4410=6900 adm^2<BR>\n" );
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document.write( "sd= sqrt(V)=83.07<BR>\n" );
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