document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=643270>Question 643270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"A researcher found that 85% of customers who make purchase at a department store are please with the store customer service. We asked 20 customers whether or not they are pleased with the store customer service. Is this a binomial experiement? Use the correct formula to find that the probability that, out of 20 customers, exactly 12 of them are pleased with the customer service.\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #404431 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=404431\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"A researcher found that 85% of customers who make purchase at a department store are please with the store customer service. We asked 20 customers whether or not they are pleased with the store customer service. Is this a binomial experiement? Use the correct formula to find that the probability that, out of 20 customers, exactly 12 of them are pleased with the customer service.\"<BR>\n" );
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document.write( "Binomial Problem with n = 20 and P(purchase) = 0.85<BR>\n" );
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document.write( "P(x = 12) = 20C12*0.85^12*0.15^8 = binompdf(20,0.85,12) = 0.0046<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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