document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=939438>Question 939438</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A poll of 1,068 adult Americans reveals that 52% of the voters surveyed prefer the Democratic candidate for the presidency. At the 0.05 significance level, test the claim that more than half of all voters prefer the Democrat.\r<BR>\n" );
document.write( "\n" );
document.write( "  A. Reject the null hypothesis. Conclude that there is insufficient evidence that more than half of all voters prefer Democrats. 	<BR>\n" );
document.write( "  B. Do not reject the null hypothesis. Conclude that there is sufficient evidence that more than half of all voters prefer Democrats. 	<BR>\n" );
document.write( "  C. Reject the null hypothesis. Conclude that there is sufficient evidence that more than half of all voters prefer Democrats. 	<BR>\n" );
document.write( "  D. Do not reject the null hypothesis. Conclude that there is insufficient evidence that more than half of all voters prefer Democrats. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #572423 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=572423\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ho: p = 0.50 (claim)<BR>\n" );
document.write( "Ha: p > 0.50<BR>\n" );
document.write( "....<BR>\n" );
document.write( "test stat: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28x+-+mu%29%2Fsqrt%28blue%28p%281-p%29%2Fn%29%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28x+-+mu%29%2Fsqrt%28blue%28p%281-p%29%2Fn%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "z(.52) = .02/sqrt(.25/(1068)) = 1.3<BR>\n" );
document.write( "P(z > 1.30) = normalcdf(1.3,100) = .0968<BR>\n" );
document.write( ".0968 > .05<BR>\n" );
document.write( "....<BR>\n" );
document.write( "D. Do not reject the null hypothesis. Conclude that there is insufficient evidence that more than half of all voters prefer Democrats. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );