document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=349764>Question 349764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Approximately 15% of the calls to an airline reservation phone line result in a reservation being made. Suppose that an operator handles 15 calls. What is the probability that none of the 15 calls result in a reservation? (Give the answer to 3 decimals places.)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #249985 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=249985\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> probability of a call resulting in a reservation = .15<BR>\n" );
document.write( "probability of a call not resulting in a reservation = .85\r<BR>\n" );
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document.write( "15 calls are made.\r<BR>\n" );
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document.write( "what is the probability that at least 1 of them will be a reservation?\r<BR>\n" );
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document.write( "that equals 1 minus the probability that all of them do not result in a reservation.\r<BR>\n" );
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document.write( "since the probability of any one call not resulting in a reservation equals .85, then the probability that all 15 calls will not result in a reservation equals .85^15.\r<BR>\n" );
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document.write( "that number is .087354219.\r<BR>\n" );
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document.write( "the probability that at least 1 call will result in a reservation is 1 minus the probability that no calls will result in a reservation.\r<BR>\n" );
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document.write( "that probability = .912645781.\r<BR>\n" );
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document.write( "that's the probability that at least 1 call will result in a reservation.\r<BR>\n" );
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