document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1129604>Question 1129604</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a program designed to help patients stop&#8203; smoking, <BR>\n" );
document.write( "195<BR>\n" );
document.write( "195 patients were given sustained&#8203; care, and <BR>\n" );
document.write( "83.6<BR>\n" );
document.write( "83.6&#8203;% of them were no longer smoking after one month. Use a <BR>\n" );
document.write( "0.01<BR>\n" );
document.write( "0.01 significance level to test the claim that <BR>\n" );
document.write( "80<BR>\n" );
document.write( "80&#8203;% of patients stop smoking when given sustained care. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #746262 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=746262\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assuming random sample, etc., this is a one sample proportion test<BR>\n" );
document.write( "Ho: 80% stop<BR>\n" );
document.write( "Ha: some other number stop<BR>\n" );
document.write( "test statistic is a z and critical value is |z|>2.576<BR>\n" );
document.write( "z=(p hat-p)/sqrt((p*(1-p)/n)' sqrt term is sqrt(.8*.2/195)=0.0286<BR>\n" );
document.write( "z=0.036/0.0286=1.26<BR>\n" );
document.write( "Fail to reject Ho; insufficient evidence to reject Ho </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );