document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=231555>Question 231555</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"J.D power and associates says that 60 percent of car buyers now use the internet <BR>\n" );
document.write( "for research and price comparisons. <BR>\n" );
document.write( "Find the probability in a sample of 8 car buyers that:(A) all 8 use the internet (B) at least 5 will use the internet (C) more than 4 will use the internet (D)2 or more will use the internet (E) The expected number of car buyers who will use the internet (F) The Standard deviation of the buyers who will use the internet\"\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 #171436 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=171436\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"J.D power and associates says that 60 percent of car buyers now use the internet <BR>\n" );
document.write( "for research and price comparisons. <BR>\n" );
document.write( "Find the probability in a sample of 8 car buyers that:<BR>\n" );
document.write( "(A) all 8 use the internet<BR>\n" );
document.write( "Ans: 0.6^8<BR>\n" );
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document.write( "(B) at least 5 will use the internet<BR>\n" );
document.write( "Ans: 1 - binomcdf(8,0.6,4)<BR>\n" );
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document.write( "(C) more than 4 will use the internet<BR>\n" );
document.write( "Ans: same as (B)<BR>\n" );
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document.write( "(D)2 or more will use the internet<BR>\n" );
document.write( "Ans: 1 - binomcdf(8,0.6,1)<BR>\n" );
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document.write( "(E) The expected number of car buyers who will use the internet<BR>\n" );
document.write( "Ans: np = 8*0.6 = 0.48<BR>\n" );
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document.write( "(F) The Standard deviation of the buyers who will use the internet\"<BR>\n" );
document.write( "Ans: sqrt(npq) = sqrt(0.48*0.4) = 1.3856<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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