document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1010506>Question 1010506</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A random sample of 145 students is chosen from a population of 4,250 students. If the mean IQ in the sample is 130 with a standard deviation of 7, what is the 90% confidence interval for the students' mean IQ score?<BR>\n" );
document.write( " 98.98&#8722;101.02 <BR>\n" );
document.write( " 109&#8722;112. <BR>\n" );
document.write( " 125&#8722;135 <BR>\n" );
document.write( " 129.05&#8722;130.95 <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #625978 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=625978\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A random sample of 145 students is chosen from a population of 4,250 students. If the mean IQ in the sample is 130 with a standard deviation of 7, what is the 90% confidence interval for the students' mean IQ score?<BR>\n" );
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document.write( "x-bar = 130<BR>\n" );
document.write( "ME = 1.645 * [7/ sqrt(145)] = 0.0794<BR>\n" );
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document.write( "90% CI:: 130-0.0794 < u < 130+0.0794<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "129.05&#8722;130.95  </SPAN>\n" );
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