document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1076088>Question 1076088</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sample of 469 teenage births at a large city hospital is observed for the number of births resulting in twins. the 95% confidence interval for the proportion for all births among teenage girls in twins was estimated to be (0.006, 0.026). \r<BR>\n" );
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document.write( "What is the sample proportion of teenage births resulting in twins?<BR>\n" );
document.write( "What is the margin of error for this interval? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #690836 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=690836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The 95% interval came from p hat +/- sqrt (p*(1-p))/469<BR>\n" );
document.write( "Half the interval width is 0.01<BR>\n" );
document.write( "The sample proportion will be in the middle or 0.016 or 1.6%<BR>\n" );
document.write( "The margin of error is the interval width or +/-0.01.<BR>\n" );
document.write( "Check by using 0.016+/- sqrt (p*(1-p)/469)<BR>\n" );
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