document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1181639>Question 1181639</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve for the t  -  computed and determine the t  -  tabular of the situation<BR>\n" );
document.write( "given below.\r<BR>\n" );
document.write( "\n" );
document.write( "A course in mathematics is taught to 15 students by explicit method. Another<BR>\n" );
document.write( "group of 17 students was given the same course by means of another method. At the<BR>\n" );
document.write( "end of the semester, the same test was administered to each group. The 15 students<BR>\n" );
document.write( "under method A made an average of 85 with a standard deviation of 4, while the 17<BR>\n" );
document.write( "students under method B made an average of 81 with a standard deviation of 5. Test<BR>\n" );
document.write( "the null hypothesis of no significant difference in the performance of the two groups of<BR>\n" );
document.write( "students at 5% level of significance.<BR>\n" );
document.write( "H0:<BR>\n" );
document.write( "H1:<BR>\n" );
document.write( "Level of Significance:<BR>\n" );
document.write( "Test:<BR>\n" );
document.write( "Critical Region:<BR>\n" );
document.write( "Solution:<BR>\n" );
document.write( "Decision:<BR>\n" );
document.write( "Conclusion:<BR>\n" );
document.write( "(Could someone help me with this? I'm lacking of time) Thank you very much. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #811872 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=811872\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ho:muA=muB<BR>\n" );
document.write( "Ha: muA NE muB<BR>\n" );
document.write( "alpha=0.05 p{reject Ho|Ho true}<BR>\n" );
document.write( "test stat is a 2 way t df=30 (will use the simpler formula of n1+n2-2<BR>\n" );
document.write( "critical value is |t| > 2.042<BR>\n" );
document.write( "calculation is t=(85-81)/sqrt (s1^2/n1+s2^2/n2)<BR>\n" );
document.write( "=4/sqrt(16/15)+(25/17)<BR>\n" );
document.write( "=4/1.593<BR>\n" );
document.write( "=2.51<BR>\n" );
document.write( "reject Ho and there is a difference between the two at the 5% level of significance<BR>\n" );
document.write( "p-value=0.0177 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );