document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=873016>Question 873016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive. A company asks 12 job applicants to take a lie detect test.  Suppose that all 12 applicants answer truthfully.\r<BR>\n" );
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document.write( "What is the probability that exactly one is being deceptive.<BR>\n" );
document.write( "What is the probability that at most one is being deceptive.<BR>\n" );
document.write( "What is the mean and standard deviation of this distribution.\r<BR>\n" );
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document.write( "I am having trouble with these questions, thanks in advanced  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #526598 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=526598\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(test suggesting person is deceptive) = .2,  n = 12<BR>\n" );
document.write( "1)P(x=1) = binompdf(12, .2, 1) = .2062 0r 20.62%<BR>\n" );
document.write( "2)P(at most one) = 1 - P(none) =  1 - (.8)^12 = .0687  0r 6.87%<BR>\n" );
document.write( "3. mean = .2*12 = 2.4, SD = sqrt(2.4*.8) </SPAN>\n" );
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