document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=849659>Question 849659</A>: <I><SPAN STYLE=\"word-break: break-all;\"> approximately 10% of the glass bottles coming off a production line have serious flaws in the glass. If two bottles are randomly selected, find the mean and variance of the number of bottles that have serious flaws.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #511677 by </B><A HREF=/tutors/aboutme.mpl?userid=swincher4391><B>swincher4391(1107)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=swincher4391><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=swincher4391><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=511677\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let X be a binomial random variable with p=.10 and n = 2\r<BR>\n" );
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document.write( "E[X] (mean)  =  n*p = 2 * .10 = 0.20\r<BR>\n" );
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document.write( "Var[x] = n*p*q = 2*.10*.90 = 0.18 </SPAN>\n" );
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