document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=946707>Question 946707</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose a student either has 1, 2, or 3 finals to take each with a respective probability of .19, .47, and .34\r<BR>\n" );
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document.write( "What is a student’s expected number of finals?  		<BR>\n" );
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document.write( "What is the standard deviation?		\r<BR>\n" );
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document.write( "Please show how you got your answer !!! Thanks In Advance !!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #577687 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=577687\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Expected score:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=E=1%280.19%29%2B2%280.47%29%2B3%280.34%29 ALIGN=MIDDLE  ALT=\"E=1%280.19%29%2B2%280.47%29%2B3%280.34%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=E=0.19%2B.94%2B1.02 ALIGN=MIDDLE  ALT=\"E=0.19%2B.94%2B1.02\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=E=2.15 ALIGN=MIDDLE  ALT=\"E=2.15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Standard deviation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma%5E2=%281-2.15%29%5E2%280.19%29%2B%282-2.15%29%5E2%280.47%29%2B%283-2.15%29%5E2%280.34%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma%5E2=0.2513%2B0.01058%2B0.24565 ALIGN=MIDDLE  ALT=\"sigma%5E2=0.2513%2B0.01058%2B0.24565\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma%5E2=0.5075 ALIGN=MIDDLE  ALT=\"sigma%5E2=0.5075\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma=0.71 ALIGN=MIDDLE  ALT=\"sigma=0.71\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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