document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980506>Question 980506</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a seed company advertises that, if its seeds are properly planted, 95% of them will germinate.  What is the probability that, when 20 seeds are properly planted, at least 15 will germinate - answer </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601639 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601639\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a binomial probability problem with P(success) = 0.95<BR>\n" );
document.write( "In this case the number of trials is 20 and the number of successes is 15 or greater.<BR>\n" );
document.write( "P(15 germinate) = C(20,15)*0.95^15*0.05^5 = 0.00257<BR>\n" );
document.write( "etc. <BR>\n" );
document.write( "If we calculate all the probabilities P(15) to P(20) and add we get 0.99967. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );