A paired difference experiment produced the following results: =49, ⎯⎯⎯1=163, ⎯⎯⎯2=172, ⎯⎯⎯=−9, =67, (a) Determine the rejection region for the hypothesis 0:=0 if :>0. Use =0.08. > (b) Conduct a paired difference test described above. The test statistic is The final conclusion is