document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=838814>Question 838814</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the following scenario to answer the next 3 questions.  It is known that 30% of all customers of a major credit card pay their bills in full before any interest charges are incurred.  Suppose a simple random sample of 150 credit card holders is selected.<BR>\n" );
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document.write( "	 What is the probability that between 40 and 50 customers pay their accounts balances in full before any interest charges are incurred?\r<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 #505379 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=505379\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It is known that 30% of all customers of a major credit card pay their bills in full before any interest charges are incurred. <BR>\n" );
document.write( "Suppose a simple random sample of 150 credit card holders is selected.<BR>\n" );
document.write( "Binomial Problem with n = 150 and p(pay) = 0.30<BR>\n" );
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document.write( "What is the probability that between 40 and 50 customers pay their accounts balances in full before any interest charges are incurred?<BR>\n" );
document.write( "P(40<= x <=50) = binomcdf(150,0.3,50)-binomcdf(150,0.3,39)<BR>\n" );
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document.write( "= 0.6730<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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