document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1104723>Question 1104723</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Q1 About 9% of people are left-handed.  Suppose 5 people are selected at random.18<BR>\n" );
document.write( "(a) What is the probability that all are right-handed?<BR>\n" );
document.write( "(b) What is the probability that all are left-handed?<BR>\n" );
document.write( "(c) What is the probability that not all of the people are right-handed?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #719413 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=719413\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Q1 About 9% of people are left-handed. Suppose 5 people are selected at random.18<BR>\n" );
document.write( "P(left-handed) = 0.09 ; P(right-handed) = 0.91<BR>\n" );
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document.write( "(a) What is the probability that all are right-handed?<BR>\n" );
document.write( "P(x = 5 are right handed) = 18C5*0.91^5*0.09^13 = binompdf(18,0.91,5) = 1.36x10^-10<BR>\n" );
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document.write( "(b) What is the probability that all are left-handed? = 0.09^18 = 1.5x10^-19<BR>\n" );
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document.write( "(c) What is the probability that not all of the people are right-handed?<BR>\n" );
document.write( "P(x = 18 are right-handed) = 1- 0.91^18 = 0.8169<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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