Find $\overline { \mathrm { d } } .$ Assume the Samples Are Random and Dependent, and the Populations

Multiple Choice

Find $\overline { \mathrm { d } } .$ Assume the samples are random and dependent, and the populations are normally distributed. $$\begin{array} { c | c c c c c } \mathrm { A } & 2.5 & 3.5 & 5.4 & 2.4 & 2.5 \\\hline \mathrm { B } & 4.9 & 3.8 & 3.7 & 3.6 & 5.0\end{array}$$

A) -0.94
B) -0.76
C) 0.58
D) 0.89