document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=695879>Question 695879</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Of the members of a Boy scout troop, 15% have received the First Aid merit badge.  If 40 Boy Scouts are selected at random, use the normal distribution as an approximation to the binomial distribution to find the probability that four or more will have the First Aid merit badge.<BR>\n" );
document.write( "MULTIPLE CHOICE:<BR>\n" );
document.write( "A)86.6%<BR>\n" );
document.write( "B)81.3%<BR>\n" );
document.write( "C)36.6%<BR>\n" );
document.write( "D)31.3% </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428704 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=428704\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Of the members of a Boy scout troop, 15% have received the First Aid merit badge. If 40 Boy Scouts are selected at random, use the normal distribution as an approximation to the binomial distribution to find the probability that four or more will have the First Aid merit badge.<BR>\n" );
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document.write( "u = np = 0.15*40 = 6<BR>\n" );
document.write( "s = sqrt(6*0.85) = 2.258<BR>\n" );
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document.write( "z(3.5) = (3.5-6)/[2.258] = -1.1072<BR>\n" );
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document.write( "P(4<= x <=15) = P(-1.1072<= z <= 100) = 0.8659<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "MULTIPLE CHOICE:<BR>\n" );
document.write( "A)86.6%<BR>\n" );
document.write( "B)81.3%<BR>\n" );
document.write( "C)36.6%<BR>\n" );
document.write( "D)31.3%<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );