document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1192580>Question 1192580</A>: <I><SPAN STYLE=\"word-break: break-all;\">  <BR>\n" );
document.write( "x       P(x)<BR>\n" );
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document.write( "0	0.2<BR>\n" );
document.write( "1	0.1<BR>\n" );
document.write( "2	0.3<BR>\n" );
document.write( "3	0.4\r<BR>\n" );
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document.write( "Find the expected value of the probability distribution. Round to two decimal places. \r<BR>\n" );
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document.write( "Find the standard deviation of the probability distribution. Round to two 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 #824503 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=824503\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> add x*p(x)  for each<BR>\n" );
document.write( "0+0.1+0.6+1.2=1.90 expected value.<BR>\n" );
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document.write( "variance is squared dev. * prob. =(-1.9)^2*0.2+(-0.9)^2*0.1+(0.1)^2*0.3+1.1^2*0.4<BR>\n" );
document.write( "=0.722+0.081+0.003+0.484<BR>\n" );
document.write( "=1.29<BR>\n" );
document.write( "sd=sqrt(V)=sqrt (1.29)=1.14 </SPAN>\n" );
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