document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=792386>Question 792386</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At the end of 2010, 31% of the households in the Us had a Blu-ray player. If eight households are chosen at random, find the probability that<BR>\n" );
document.write( "a.Exactly five of them have a Blu-ray.<BR>\n" );
document.write( "b. At least five of them have a Blu-ray player.<BR>\n" );
document.write( "c. At most four of them have a Blu-ray player. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #480058 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=480058\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At the end of 2010, 31% of the households in the Us had a Blu-ray player. If eight households are chosen at random,<BR>\n" );
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document.write( "Binomial Problem with n = 8 and p(have) = 0.31<BR>\n" );
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document.write( "find the probability that<BR>\n" );
document.write( "a.Exactly five of them have a Blu-ray.<BR>\n" );
document.write( "P(x = 5) = 8C5(0.31)^5*(0.69)^3 = binompdf(8,0.31,5) = 0.0527<BR>\n" );
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document.write( "b. At least five of them have a Blu-ray player.<BR>\n" );
document.write( "P(5<= x <=8) = 1 - P(0<= x <=4) = 1 - binomcdf(8,0.31,4) = 0.0661<BR>\n" );
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document.write( "c. At most four of them have a Blu-ray player.<BR>\n" );
document.write( "Ans: 1-binomcdf(8,0.31,3) = 0.2126<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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