document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=771791>Question 771791</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Roll an 8 sided die.  Please create a probability distribution for this event and then find E[x] and E[x2]. </SPAN>\n" );
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document.write( "Probability distribution:\r<BR>\n" );
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document.write( "Range of X = {1,2,3,4,5,6,7,8}\r<BR>\n" );
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document.write( "P(X = i) = 1/8  for 1<=i<=8\r<BR>\n" );
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document.write( "E(x) = (1/8)(1+2+3+4+5+6+7+8) = 36/8 = 4.5\r<BR>\n" );
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document.write( "E(x2) = (1/8)(1+4+9+16+25+36+49+64)= 204/8 = 25.5\r<BR>\n" );
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document.write( "I can help you with  more questions at: mthman@gmail.com\r<BR>\n" );
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document.write( "Thanks<BR>\n" );
document.write( " </SPAN>\n" );
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