The table below summarizes the coffee prices of $2$ shops. Shop $1$ and Shop $2.($We will NOT assume equality of variances$)$

$-$mean$--$standard deviation$--$n$-$

Shop $14\mathrm{.}752\mathrm{.}897$

Shop $25\mathrm{.}251\mathrm{.}319$

When testing at alpha $=1\%,$ if the true mean price of shop $2$ is higher than shop $1.$

$.$ What is the Critical Value used to determine the rejection region?

Question $6$ options:

$2\mathrm{.}624$

$-2\mathrm{.}624$

$-2\mathrm{.}998$

$2\mathrm{.}998$