document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=253287>Question 253287</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jim can drive a golf ball over 220 yards 40% of the time. He regularly plays on a golf course where drives of that distance are needed on 12 holes. Determine the probability that exactly 7 of his drives will be over 220 yards </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #185574 by </B><A HREF=/tutors/aboutme.mpl?userid=Greenfinch><B>Greenfinch(383)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Greenfinch><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=Greenfinch><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=185574\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a binomial distribution B(12,0.4)<BR>\n" );
document.write( "The chance of exactly 7 getting over is 12C7 x (0.4)^7 x (0.6)^5<BR>\n" );
document.write( "12C7 = 792  0.4^7 = 128/78125 and 0.6^5 = 243/3125<BR>\n" );
document.write( "Multiplying up gives 0.1009023713 so lets call it 10% </SPAN>\n" );
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