document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=246043>Question 246043</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assuming the population has a normal distribution. A sample of 25 randomly selected students has a mean test score of 81.5 woth a stardard deviation of 10.2. \r<BR>\n" );
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document.write( "A. costruct a 95% confidence interval for the population mean.(show all five steps please)<BR>\n" );
document.write( "BInterpret the confidence in the context of this problem.<BR>\n" );
document.write( "CInterpret the confidence in the context of this problem..<BR>\n" );
document.write( "IT WOULD BE GREAT IT YOU COULD HELP ME THANK YOU SO MUCH FOR YOUR TIME!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #179723 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=179723\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assuming the population has a normal distribution. A sample of 25 randomly selected students has a mean test score of 81.5 with a standard deviation of 10.2. <BR>\n" );
document.write( "A. contruct a 95% confidence interval for the population mean.(show all five steps please)<BR>\n" );
document.write( "sample mean: 81.5<BR>\n" );
document.write( "standard error: E = t*s/sqrt(25) = 2.064*10.2/sqrt(25) = 4.21<BR>\n" );
document.write( "95% CI: 81.5-4.21 < u < 81.5+4.21 <BR>\n" );
document.write( "95% CI: 77.29 < u < 85.71<BR>\n" );
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document.write( "B. Interpret the confidence in the context of this problem.<BR>\n" );
document.write( "We are 95% confident the population mean is between 77.29 and 85.71<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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