Given the following data:

$y_t={}_1+{}_2{x}_{2t}+{}_3{x}_{3t}+u_t$

Which of the following is the correct value for hat$({)}_2?$

$($a$)2\mathrm{.}89$

$($b$)1\mathrm{.}30$

$($c$)0\mathrm{.}84$

$($d$)$ We cannot determine the value of hat$({)}_2$ from the information given in the question