document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=317916>Question 317916</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the height(inches) of the students on a campus is assumed to have a normal distribution with a sample standard deviation of 4 inches. A random sample of 49 students was taken with a sample mean of 60 inches. The 95% confidence interval for the population mean µ is :\r<BR>\n" );
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document.write( "A. 55.33-64.33<BR>\n" );
document.write( "B. 58.88-61.12<BR>\n" );
document.write( "C. 60.58-63.45<BR>\n" );
document.write( "D. None of the above </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #227646 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=227646\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  the height(inches) of the students on a campus is assumed to have a normal distribution with a sample standard deviation of 4 inches. <BR>\n" );
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document.write( "A random sample of 49 students was taken with a sample mean of 60 inches. The 95% confidence interval for the population mean µ is ?<BR>\n" );
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document.write( "sample mean: 60<BR>\n" );
document.write( "ME = (invT(0.975 with df=48)*4/sqrt(49)<BR>\n" );
document.write( "ME = 2.0106*(4/7) = 1.148<BR>\n" );
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document.write( "95% CI: 60-01.148 < u <  61.148<BR>\n" );
document.write( "95% CI: 58.85 < u < 61.15<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " <BR>\n" );
document.write( "A. 55.33-64.33<BR>\n" );
document.write( "B. 58.88-61.12<BR>\n" );
document.write( "C. 60.58-63.45<BR>\n" );
document.write( "D. None of the above<BR>\n" );
document.write( " </SPAN>\n" );
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