For the Following Data from a Repeated-Measures Study:
A

Short Answer

For the following data from a repeated-measures study:
a.Find the difference scores
b.Calculate MD and the variance for the difference scores
c.Calculate the estimated standard error for the mean difference
$$\begin{array}{l}\text { Subject Treatment } 1 \text { Treatment } 2\\\begin{array} { r r r } \text { A } & 12 & 14 \\\text { B } & 6 & 16 \\\text { C } & 8 & 10 \\\text { D } & 9 & 11\end{array}\end{array}$$