document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=832320>Question 832320</A>: <I><SPAN STYLE=\"word-break: break-all;\"> J.D. Power and Associates says that 60 percent of car buyers now use the Internet for research and price comparisons.<BR>\n" );
document.write( "1.Find the probability that in a sample of 5 car buyers, all 5 will use the Internet. Answer is .0778\r<BR>\n" );
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document.write( "2.Find the probability that in a sample of 5 car buyers, at least 2 will use the Internet. \r<BR>\n" );
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document.write( "3.Find the probability that in a sample of 5 car buyers, more than 1 will use the Internet\r<BR>\n" );
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document.write( "4.Find the mean and standard deviation of the probability distribution<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 #501965 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=501965\">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 for research and price comparisons.<BR>\n" );
document.write( "1.Find the probability that in a sample of 5 car buyers, all 5 will use the Internet. Answer is .0778 <BR>\n" );
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document.write( "2.Find the probability that in a sample of 5 car buyers, at least 2 will use the Internet.<BR>\n" );
document.write( "P(2<= x <=5) = 1 - P(0<= x <=1) = 1-binomcdf(5,0.6,1) = 0.9130<BR>\n" );
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document.write( "3.Find the probability that in a sample of 5 car buyers, more than 1 will use the Internet<BR>\n" );
document.write( "Ans: Same as answer to #2.<BR>\n" );
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document.write( "4.Find the mean and standard deviation of the probability distribution<BR>\n" );
document.write( "mean = np = 5*0.6 = 0.3<BR>\n" );
document.write( "std = sqrt(npq) = sqrt(0.3*0.4) = 0.3464<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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