A) $\overline{y}$ = 220; $s _ { y }$ = 1250
B)

Multiple Choice

$\begin{array}{c|c|c|c|c|c}\overline{\mathrm{x}} & \mathrm{s}_{\mathrm{x}} & \overline{\mathrm{y}} & \mathrm{s}_{\mathrm{y}} & \mathrm{r} & \hat{\mathrm{y}}=\mathrm{b}_{0}+\mathrm{b}_{1 \mathrm{x}} \\\hline 10 & 5 & ? & ? & -0.8 & \hat{\mathrm{y}}=200-2 \mathrm{x}\end{array}$

A) $\overline{y}$ = 220; $s _ { y }$ = 12.50
B) $\overline{y}$ = 190; $s _ { y }$ = 0.32
C) $\overline{y}$ = 210; $s _ { y }$ = 6
D) $\overline{y}$ = 180; $s _ { y }$ = 12.50
E) $\overline{y}$ = 20; $s _ { y }$ = 2.50