document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1158034>Question 1158034</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Twelve different video games showing substance use were observed and the duration times of game play​ (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the data to construct a 99​% confidence interval estimate of mu​, the mean duration of game play.<BR>\n" );
document.write( "4057<BR>\n" );
document.write( "3882<BR>\n" );
document.write( "3863<BR>\n" );
document.write( "4032<BR>\n" );
document.write( "4321<BR>\n" );
document.write( "4811<BR>\n" );
document.write( "4653<BR>\n" );
document.write( "4028<BR>\n" );
document.write( "5001<BR>\n" );
document.write( "4816<BR>\n" );
document.write( "4325<BR>\n" );
document.write( "4316 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #780956 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=780956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the 99%CI is  x bar +/- t (0.995, df=11)*s/sqrt(n), where n=12\r<BR>\n" );
document.write( "\n" );
document.write( "t=3.106<BR>\n" );
document.write( "x bar=4342.08<BR>\n" );
document.write( "s=392.43<BR>\n" );
document.write( "half-interval is 351.96<BR>\n" );
document.write( "(3990.12, 4694.04) is 99% CI of the true mean or (3990, 4694)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );