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 $\mathrm { s } _ { \mathrm { d } }$ .
$\begin{array}{c|ccccc}\mathrm{A} & 6.4 & 7.4 & 9.3 & 6.3 & 6.4 \\\hline \mathrm{B} & 8.8 & 7.7 & 7.6 & 7.5 & 8.9\end{array}$

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

A) $1.73$
B) $1.21$
C) $1.32$
D) $1.89$