document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=363999>Question 363999</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It is reported that 16 percent of American households use a cell phone exclusively for their telephone service. In a sample of eight households, find the probability that: \r<BR>\n" );
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document.write( "a)  None use a cell phone as their exclusive service. \r<BR>\n" );
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document.write( "b)  At least one uses the cell exclusively. <BR>\n" );
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document.write( "(c) At least five use the cell phone.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #259619 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=259619\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It is reported that 16 percent of American households use a cell phone exclusively for their telephone service. In a sample of eight households, find the probability that:<BR>\n" );
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document.write( "Binomial Problem with n = 8 and p = 0.16<BR>\n" );
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document.write( "a) None use a cell phone as their exclusive service.<BR>\n" );
document.write( "P(x=0) = 0.84^8<BR>\n" );
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document.write( "b) At least one uses the cell exclusively.<BR>\n" );
document.write( "P(at least one uses) = 1 - P(none use)<BR>\n" );
document.write( "= 1 - 0.84^8<BR>\n" );
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document.write( "(c) At least five use the cell phone.<BR>\n" );
document.write( "P(5<= x <=8) = 1 - P(0<= x <=4) = 1 - binomcdf(8,.16,4) = 0.0038<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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