document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=359003>Question 359003</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the mean and standard deviation of the following probability distribution:<BR>\n" );
document.write( " x 1 2 3<BR>\n" );
document.write( " P(x)<BR>\n" );
document.write( " 0.1<BR>\n" );
document.write( " 0.2<BR>\n" );
document.write( " 0.7<BR>\n" );
document.write( "  <BR>\n" );
document.write( "Please show all of your work.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #256180 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=256180\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mean = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu+=+1%2A0.1+%2B+2%2A0.2+%2B+3%2A0.7+=+2.6 ALIGN=MIDDLE  ALT=\"mu+=+1%2A0.1+%2B+2%2A0.2+%2B+3%2A0.7+=+2.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Variance = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma%5E2+=+%281-2.6%29%5E2%2A0.1++%2B+%282-2.6%29%5E2%2A0.2+%2B+%287-2.6%29%5E2%2A0.7 ALIGN=MIDDLE  ALT=\"sigma%5E2+=+%281-2.6%29%5E2%2A0.1++%2B+%282-2.6%29%5E2%2A0.2+%2B+%287-2.6%29%5E2%2A0.7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.56%2A0.1%2B0.36%2A0.2%2B19.36%2A0.7+=+13.88 ALIGN=MIDDLE  ALT=\"2.56%2A0.1%2B0.36%2A0.2%2B19.36%2A0.7+=+13.88\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "Thus ,<BR>\n" );
document.write( "standard deviation = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma+=+sqrt%2813.88%29+=+3.7256 ALIGN=MIDDLE  ALT=\"sigma+=+sqrt%2813.88%29+=+3.7256\"   DISABLED_style= \"max-width:90%; height:auto;\" >, to four decimal places. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );