Specify the Appropriate Rejection Region for Testing $\mathrm { H } _ { 0 } : \sigma _ { 1 } ^ { 2 } = \sigma _ { 2 } ^ { 2 }$

Multiple Choice

Specify the appropriate rejection region for testing $\mathrm { H } _ { 0 } : \sigma _ { 1 } ^ { 2 } = \sigma _ { 2 } ^ { 2 }$ in the given situation.
- $\mathrm { H } _ { \mathrm { a } } : \sigma _ { 1 } ^ { 2 } < \sigma { } _ { 2 } ^ { 2 } ; \alpha = 0.05 , \mathrm { n } _ { 1 } = 21 , \mathrm { n } _ { 2 } = 8$

A) $F > 3.44$
B) $F > 3.01$
C) $F > 2.51$
D) $| F | > 2.51$