Test Hypotheses Regarding Matched-Pairs Data
-Data Sets $\mathrm { A }$

Multiple Choice

Test Hypotheses Regarding Matched-Pairs Data
-Data sets $\mathrm { A }$ and $\mathrm { B }$ are dependent. Find $\overline { \mathrm { d } }$ .
$\begin{array}{c|ccccc}\mathrm{A} & 7.2 & 8.2 & 10.1 & 7.1 & 7.2 \\\hline \mathrm{B} & 9.6 & 8.5 & 8.4 & 8.3 & 9.7\end{array}$

Assume that the paired data came from a population that is normally distributed.

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