document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=435016>Question 435016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 60% . If 127 out of a random sample of  240 college students expressed an intent to vote, can we reject the aide's estimate at the 0.1  level of significance?\r<BR>\n" );
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document.write( "Perform a one -tailed test.\r<BR>\n" );
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document.write( "Thank you!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #301191 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=301191\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 60% . If 127 out of a random sample of 240 college students expressed an intent to vote, can we reject the aide's estimate at the 0.1 level of significance? <BR>\n" );
document.write( "Perform a one -tailed test. <BR>\n" );
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document.write( "Ho: p >= 0.60<BR>\n" );
document.write( "Ha: p < 0.60<BR>\n" );
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document.write( "p-hat = 127/240 = 0.5292<BR>\n" );
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document.write( "z(0.5292) = (0.5292-0.6)/sqrt[0.6*0.4/240] = -0.7083<BR>\n" );
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document.write( "p-value = P(z<-0.7083) = 0.24<BR>\n" );
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document.write( "Since the p-value is greater than 1%, fail to reject Ho.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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