The Scores That Follow Were Obtained Before and After a Tai-Chi

Essay

The scores that follow were obtained before and after a Tai-Chi workshop. Higher scores indicate a greater calmness. Set $\alpha$ = .01 and test for a significant difference with a t test. Find d. Write a sentence to summarize your conclusion. $$\begin{array} { l c c } \text { Participant } & \text { Before } & \text { After } \\\hline \text { J. U. } & 4 & 7 \\\text { S. T. } & 3 & 5 \\\text { A. S. } & 7 & 9 \\\text { M. I. } & 2 & 4 \\\text { L. E. } & 6 & 7\end{array}$$