document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1178738>Question 1178738</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given the probability density function  <BR>\n" );
document.write( "f(x)=1/4<BR>\n" );
document.write( "  over the interval [3,7], find the expected value, the mean, the variance and the standard deviation.\r<BR>\n" );
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document.write( "Expected value: <BR>\n" );
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document.write( "Mean: <BR>\n" );
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document.write( "Variance: <BR>\n" );
document.write( "  \r<BR>\n" );
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document.write( "Standard Deviation:  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #808114 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=808114\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a uniform function.<BR>\n" );
document.write( "mean or E(X)= (b+a)/2=5<BR>\n" );
document.write( "variance is (b-a)^2/12=16/12=4/3<BR>\n" );
document.write( "sd is sqrt(V)=(4/3) sqrt (3) </SPAN>\n" );
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