document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1012410>Question 1012410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It has been reported that a third of all credit card users pay their bills in full each month. <BR>\n" );
document.write( "10 credit card users are selected. What is the probability that <BR>\n" );
document.write( "(a)none of them pay their bills in full each month <BR>\n" );
document.write( "(b)one of them pays their bills in full each month <BR>\n" );
document.write( "(c)at least two of them pay their bills in full each month?<BR>\n" );
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document.write( "Express your answers to 3 decimal places </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #628352 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=628352\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It has been reported that a third of all credit card users pay their bills in full each month. <BR>\n" );
document.write( "10 credit card users are selected. What is the probability that <BR>\n" );
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document.write( "Binomial Problems with n = 10 and p(pay) = 1/3 ; p(not pay all) = 2/3<BR>\n" );
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document.write( "(a)none of them pay their bills in full each month<BR>\n" );
document.write( "Ans: P(x = 0) = (2/3)^10 = 0.0173<BR>\n" );
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document.write( "(b)one of them pays their bills in full each month<BR>\n" );
document.write( "P(x = 1) = 10C1*(1/3)(2/3)^9 = binompdf(10,1/3,1) = 0.0867<BR>\n" );
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document.write( "(c)at least two of them pay their bills in full each month?<BR>\n" );
document.write( "P(2<= x <=10) = 1 - binomcdf(10,1/3,1) = 0.896<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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