document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=267680>Question 267680</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help with this probability question. Thank You!\r<BR>\n" );
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document.write( "A recent survey found that 40% of air traffic controllers found their job extremely stressful. Suppose 12 air traffic controllers are selected at random, what is the probability that 2 or more consider their job stressful?\r<BR>\n" );
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document.write( "Thank you very much! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #196389 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=196389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A recent survey found that 40% of air traffic controllers found their job extremely stressful. Suppose 12 air traffic controllers are selected at random, what is the probability that 2 or more consider their job stressful? <BR>\n" );
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document.write( "It's a binomial problem:<BR>\n" );
document.write( "n= 12 ; p = 0.4<BR>\n" );
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document.write( "P(2<= x <=12) = 1 - P(0<= x <=1) = 1 - binomcdf(12,0.4,1) = 0.9804<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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