The Following Data Are Drawn from a Matched Pairs Experiment

Essay

The following data are drawn from a matched pairs experiment: $$\begin{array}{l}\text { Matched Pairs }\\\begin{array} { | l | c c c c c c c c | } \hline & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\\hline \text { After } & 4 & 10 & 12 & 7 & 6 & 7 & 3 & 10 \\\text { Before } & 6 & 9 & 12 & 10 & 12 & 10 & 5 & 8 \\\hline\end{array}\end{array}$$ Use the 5% significance level to test the hypotheses H₀: m_d ≥ 0,H₁: m_d < 0
Test statistic = ____________________
Critical Value = ____________________
Conclusion: ___________________________
Interpretation:__________________________________________________________