document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=972891>Question 972891</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Explain why this is or is not a probability distribution.<BR>\n" );
document.write( "x	1	2	3	4<BR>\n" );
document.write( "P(x)	0.4	0.3	0.4	-0.1\r<BR>\n" );
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document.write( "my answer:<BR>\n" );
document.write( "This is a probability distribution because all the P(x) values in the table are between 0 and 1 which make it inclusive.\r<BR>\n" );
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document.write( "Am I leaving something out and does it need more detail?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #595130 by </B><A HREF=/tutors/aboutme.mpl?userid=reviewermath><B>reviewermath(1029)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=reviewermath><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=reviewermath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=595130\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Explain why this is or is not a probability distribution.<BR>\n" );
document.write( "x	1	2	3	4<BR>\n" );
document.write( "P(x)	0.4	0.3	0.4	-0.1 <BR>\n" );
document.write( "Answer: This is NOT a probability distribution because P(X=4) = -0.1 < 0 which is not possible in a probability distribution. The probability of any event should be between 0 and 1 (inclusive). </SPAN>\n" );
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