document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1085611>Question 1085611</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A biologist estimates that 40% of the deer in a region carry a certain type of tick. For a sample of 300 deer selected at random, what is the chance that 124 or fewer deer have this tick?<BR>\n" );
document.write( "		<BR>\n" );
document.write( "A. 0.864<BR>\n" );
document.write( "		<BR>\n" );
document.write( "B. 0.702<BR>\n" );
document.write( "		<BR>\n" );
document.write( "C. 0.404<BR>\n" );
document.write( "		<BR>\n" );
document.write( "D. 0.298<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #699691 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=699691\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the binomial distribution formula<BR>\n" );
document.write( ":<BR>\n" );
document.write( "p = 0.40, n = 300, r varies  from 0 to 124<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Probability (P) ( r successes out of 300 ) = 300Cr * (0.40)^300 * (1-0.40)^(300-r)<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Note 300Cr = 300! / (r! * (300-r)!)<BR>\n" );
document.write( ":<BR>\n" );
document.write( "then sum the P(r)'s<BR>\n" );
document.write( ":<BR>\n" );
document.write( "fortunately there are binomial distribution calculators, therefore<BR>\n" );
document.write( ":<BR>\n" );
document.write( "P ( 124 or fewer deer are infected ) = 0.7030 approximately 0.70 or 70%<BR>\n" );
document.write( ":<BR>\n" );
document.write( "******************<BR>\n" );
document.write( "answer is B.<BR>\n" );
document.write( "******************<BR>\n" );
document.write( ":\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );