document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1164546>Question 1164546</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a) Plot the pmf and cdf of the geometric random variable X with probability of success p = 1/3.<BR>\n" );
document.write( "b) Find E[X] and var(X).<BR>\n" );
document.write( "c) Find P(X > 4)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #854199 by </B><A HREF=/tutors/aboutme.mpl?userid=amarjeeth123><B>amarjeeth123(574)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=amarjeeth123><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=854199\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> E[X]=1/p=1/(1/3)=3<BR>\n" );
document.write( "Var[X]=((1-p)/p^2)=(2/3)/(1/9)=(2/3)*9=2*3=6<BR>\n" );
document.write( "Since the number of trials is not given we cannot calculate the desired probability. </SPAN>\n" );
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