document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=308806>Question 308806</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A race car driver tested his car for the number of seconds required to travel from 0 to 60 mph. In 20 test he obtained an average of 4.85 seconds with a standard deviation of 1.47 seconds. Construct a 95% confidence interval for the 0 to 60 time.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #220850 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=220850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A race car driver tested his car for the number of seconds required to travel from 0 to 60 mph. <BR>\n" );
document.write( "In 20 tests he obtained an average of 4.85 seconds with a standard deviation of 1.47 seconds. Construct a 95% confidence interval for the 0 to 60 time. <BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "sample mean = 4.85 seconds<BR>\n" );
document.write( "---<BR>\n" );
document.write( "standard Error = E = 1.96*1.47/sqrt(20) = 0.6443<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "95% CI: 4.85-0.6443 < u < 4.85+0.6443<BR>\n" );
document.write( "=====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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