document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1107255>Question 1107255</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two samples are taken with the following numbers of successes and sample sizes r1=26 r2=28 n1=92 n2=63 Find a 98% confidence interval, round answers to the nearest thousandth      <p1-p2< </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #722283 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=722283\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> proportion 1 is 26/92=0.2826<BR>\n" );
document.write( "proportion 2 is 28/63=0.4444<BR>\n" );
document.write( "Their difference is -0.1618<BR>\n" );
document.write( "the CI is 0.1618+/- z(0.99)sqrt (p1(1-p1))/n1+(p2(1-p2))/n2))<BR>\n" );
document.write( "=-0.1618 +/- 2.326*sqrt (0.006122)<BR>\n" );
document.write( "=-0.1618+/-0.1820 or (-0.344, 0.020)\r<BR>\n" );
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