document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=962392>Question 962392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It is known that 15% of all people have pets.  If 15 people are selected at random, what is the probability that exactly four people will have pets? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #588011 by </B><A HREF=/tutors/aboutme.mpl?userid=jjthomson83><B>jjthomson83(4)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jjthomson83><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=jjthomson83><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=588011\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Using nCrP^(n-r)q^r<BR>\n" );
document.write( "n=15, r=4, P=100%-15%=0.85, (n-r)=15-4=11 and q=15%=0.15<BR>\n" );
document.write( "15C4×(0.85)^11×(0.15)^4<BR>\n" );
document.write( "=0.1156 to four significant figures.  </SPAN>\n" );
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