Consider the Following Hypothesis Problem $$\begin{array} { l l } n = 30 & H _ { 0 } : \sigma ^ { 2 } = 500 \\s 2 = 625 & H _ { \mathrm { a } } : \sigma ^ { 2 } ? 500\end{array}$$

Multiple Choice

Consider the following hypothesis problem. $$\begin{array} { l l } n = 30 & H _ { 0 } : \sigma ^ { 2 } = 500 \\s 2 = 625 & H _ { \mathrm { a } } : \sigma ^ { 2 } ? 500\end{array}$$ The null hypothesis is to be tested at the 5% level of significance.The critical value(s) from the chi-square distribution table is(are)

A) 42.557.
B) 43.773.
C) 16.047 and 45.722.
D) 16.791 and 46.979.