document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=896160>Question 896160</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Need assistance with this\r<BR>\n" );
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document.write( "Consider the following probability distribution.\r<BR>\n" );
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document.write( "X=       5      7        8<BR>\n" );
document.write( "P(X=x)  0.4    0.1      0.5\r<BR>\n" );
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document.write( "1. Find the expected value for the discrete random variable X<BR>\n" );
document.write( "2. Find the varance of X.<BR>\n" );
document.write( "3. Find the standard deviation of X.<BR>\n" );
document.write( "4. Find P(X>7) Where X is greater than or equal to 7. Could not insert the equal under the greater sign.\r<BR>\n" );
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document.write( "Thank You\r<BR>\n" );
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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 #543287 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=543287\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Consider the following probability distribution. <BR>\n" );
document.write( "X= 5 7 8<BR>\n" );
document.write( " P(X=x) 0.4 0.1 0.5 <BR>\n" );
document.write( "1. Find the expected value for the discrete random variable X<BR>\n" );
document.write( "E(X) = 0.4*5 + 0.1*7 + 0.5*8 = 6.7\r<BR>\n" );
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document.write( " 2. Find the varance of X.<BR>\n" );
document.write( "var(X) = 1.4177^2 = 2.0099<BR>\n" );
document.write( " 3. Find the standard deviation of X.<BR>\n" );
document.write( "std(X) = 1.4177<BR>\n" );
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document.write( " 4. Find P(X>=7)<BR>\n" );
document.write( "P(X = 7 or 8) = 0.1+0.5 = 0.6<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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