Current Attempt in Progress

Consider the test of $H_0$:${}^2=7$ against $H_1$:${}^{2}7.$ What are the critical values for the test statistic $x_0^2$ for the significance level

$=0\mathrm{.}05$ and sample size $n=19?$

Order your answers increasingly. Give your answers with two decimal places $($e$.$g$.98\mathrm{.}76).$