document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1071753>Question 1071753</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You test 100 light bulbs randomly out of a large shipment and find 6 of them to be defective. What margin of error would you need if you want a 95% confidence interval?\r<BR>\n" );
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document.write( "What is the 95% confidence interval in this case? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #686683 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=686683\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You test 100 light bulbs randomly out of a large shipment and find 6 of them to be defective. What margin of error would you need if you want a 95% confidence interval? <BR>\n" );
document.write( "What is the 95% confidence interval in this case? <BR>\n" );
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document.write( "sample proportion:: 6/100<BR>\n" );
document.write( "ME = 1.645*sqrt[0.06*0.94/100] = 0.0391<BR>\n" );
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document.write( "95% CI:: 0.06-0.0391 < p < 0.06+0.0391<BR>\n" );
document.write( "95% CI:: 0.029 < p < 0.0991<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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