0.200 \\end{array} \\] (b) a right-tailed test with \\( t=3.30 \\) and \\( 16 d f \\) \\[ \\begin{array}{l} p \\text {-value }<0.005 \\\\ 0.005
0.100 \\end{array} \\] (c) a two-tailed test with \\( t=-1.16 \\) and \\( 20 \\mathrm{df} \\) \\[ \\begin{array}{l} p \\text {-value }<0.010 \\\\ 0.010
0.200 \\end{array} \\]\r\n(d) a left-tailed test with \\( t=-6.70 \\) and \\( 8 d f \\) \\[ \\begin{array}{l} p \\text {-value }<0.005 \\\\ 0.005
0.100 \\end{array} \\]