\(S=0.900336637\ \ S^2=0.81060606\ \ n=12\)
\(H_0:\sigma^2=0.94\)
\(H_1:\sigma^2>0.94\)
\(X^2=\frac{\left(n-1\right)\left(S^2\right)}{\sigma_0^2}\)
\(X^2=\frac{\left(12-1\right)\left(0.81060606\right)}{0.94}\)
\(X^2=\frac{8.916666667}{0.94}\ \)
\(X^2=9.485815596\)
\(\alpha=0.05\)
\(X^2t=19.68\)